Mix Designs: Standard mix designs are the norm. With some of the highest temperatures in the country, placement and curing of concrete in the summer may require extreme measures. Air entrainment should be mandatory in all exterior concrete placed in this region. Mix Designs: Because the ground will stay cold longer, chemical set accelerators are often used in concrete in the spring to help the concrete set quickly and uniformly. Cool winters with temperatures ranging from 40 F and 50 F can sometimes give way to a winter cold front that drops temperatures into the lower 20s. Placement and Curing Practices: Moderate temperatures and mid-level winter humidity allow for relatively easy placement and curing of concrete during the winter. Proper mix design, placement, and curing are crucial for long-term concrete durability. Like them? During the winter, exterior concrete work typically stops, with the exception of jobs that can afford tenting or other means of raising the ground and air temperatures above freezing. Mix Designs: Reference High Plains Winter. Climate (October - November): Because fall temperatures can still be quite warm in this region, hot-weather concreting practices are still necessary until late into the season. The American Concrete Institute under ACI 306 defines that concrete … Regions of high elevation (above 7,000 feet), Copyright 1999-2021 ConcreteNetwork.com - None of this site may be reproduced without written permission. Curing concrete in these regions usually requires the use of solvent-based curing compounds or cure-and-seal chemicals to avoid freezing. Mix Designs: Standard mix designs are the norm. Proper planning and communication are keys to a successful winter pour. Placement and Curing Practices: Windy conditions can be common in the spring in western portions of this region. Mix Designs: Standard mix designs are the norm. Special Equipment: Reference High Plains Winter. Plastic sheeting, surface evaporative control agents, and curing compounds should be available on all exterior pours in the spring. Placement and Curing Practices: Hot-weather concreting practices become more critical as the temperatures start to increase. Conditions tend to be milder and drier from east to west within the region. Climate (May - September): Sunny and hot! This may … Placement and Curing Practices: Hot-weather concreting practices are in effect well into the fall in most areas of the region. Mix Designs: Standard mix designs are the norm. Standard concrete blankets may not be enough in high mountain regions to perform cold-weather concreting. Using hot water to increase concrete temperature is a common winter practice. These storms tend to be more prevalent in early summer. Mix Designs: Cold-weather concrete mix designs are mandatory for all exterior concrete placed in this region during the winter. Canton This is the dry season and conditions are most favorable during this time of year for exterior concrete work. Scheduling new exterior concrete work can be difficult, since concrete suppliers and installers are typically busy finishing as much work as possible before winter arrives. Rainfall averages from under 10 to 20 inches annually in the deserts of Utah and up to 40 to 50 inches in the mountains and valleys of Colorado. Periodic rain is common, and can occur at any time of the day. concrete foundation installation and flatwork, Importance of Roof Vents at Commercial Properties, Here’s How You Can Keep Your Refractory Performing at a High Level, Tips for Choosing the Right Flooring Option For Your Industrial Plant, How Working With Design Build Contractors Benefits Industrial Businesses, Why Some Southern States Don’t Have Basements, Artists Express Themselves on Corrugated Sheet Metal Fences. Now the American Concrete Institute under ACI 306 defines that concrete … So if it’s July and you’re having visions of a freshly poured driveway, you may want to wait a couple months for concrete-pouring primetime to come around. Mix Designs: Dealing with low humidity and intense sunshine can require the use of admixtures to extend the set time. Pumping concrete for larger pours is also common, to speed the delivery of the concrete to the jobsite in hot weather. R.G. Because of typical deep snow cover, rocky soil, and sunny days, the ground only freezes to an average depth of a few inches in mountain regions. The more coastal and southern states have milder winters, but all areas see snow. Exterior concrete placement takes place year-round, with short stoppages for inclement weather or cold temperatures occurring periodically throughout the season. Proper mix design, placement, and curing are crucial for long-term concrete durability. Frost and freezing temperatures typically do not become a factor until November. Climate Overview: The Southwest is actually comprised of two distinct regions: the coastal plains and inland high deserts. Special Equipment: Sprayers to apply surface evaporative control chemicals and curing compounds; plastic sheeting. Eliminating fly ash and retarders from mixes is normal as the temperatures start to decrease. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. ph: 419-524-4778 | fax: 419-524-4779. Temperatures range from 60 F to 80 F, with freezing temperatures very rare. Climate (April - June): High-mountain regions typically see a short, wet spring. This can be deeper on north-facing slopes. Precipitation is evenly distributed throughout the seasons, with snow falling in the winter and rain in the other seasons. Climate (April - May): Spring temperatures are cool and conditions can be wet. Even coastal areas experience hot conditions. And do not pour concrete over frozen ground. The wind can also play a factor because if it is too high on the day you’re pouring, it can cause too much water to evaporate from the concrete too quickly, leading to shrinkage cracks. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Surface evaporative control agents should be available on all jobs, whether they are used or not. The primary considerations include blankets for heat retention, heating the mix water, and chemical set accelerators to speed the initial set of the concrete. States Included: California, Arizona, New Mexico, Nevada. With cold temperatures, time is a factor, so pumping concrete becomes more common. Using hot water to increase concrete temperature is a common winter practice. Proper mix design, placement, and curing are crucial for long-term concrete durability. In northern areas of the region, 4000-psi concrete is often specified and set accelerators and air entrainment may be used if necessary. One thing both areas have in common is abundant sunshine. Frost and freezing temperatures can start to become a factor later in the season. Planning around rain is often necessary for exterior concrete pours. Exterior concrete is poured year-round with precautions.Mix Designs: Cold-weather concrete mix designs are mandatory for all exterior concrete placed in this region during the winter. Climate (December - March): Winters are typically cold, damp and overcast in this region. Special Equipment: Plastic sheeting to protect concrete from sudden rain showers; sprayers to apply curing compounds and surface evaporative control chemicals; concrete pump to help speed concrete placement on larger jobs. With the high heat and oppressive humidity, placement and curing of concrete may require extreme measures. Rain is unpredictable and can occur at any time of the day in the summer. In most areas, summer can be the most demanding time of year to pour exterior concrete. The wet season runs from June to October, with the dry season running through the winter into early summer. Placement and Curing Practices: Windy conditions can be common in the spring in western portions of this region. The farther north you go, the more severe the winters. All Rights Reserved. Whenever pouring concrete, you want it to last for many years to come. The Rocky Mountain area features extremes and rapid fluctuations of temperature, wind, and light intensity. Snowfall can occur at any time during the spring months, with wide temperature swings. The threat of snow and freezing temperatures is usually gone by mid-April, but rain is always a consideration. Proper mix design, placement, and curing are crucial for long-term concrete durability. The high plains regions will experience steady wind in spring and summer, with a high average of sunny days. The bigger concern is what the temperature will be over the days following the pour, did you record those. The ready-mix supplier should be consulted far in advance of the concrete placement, since some states have road restrictions that may create a logistical issue in delivering concrete. Scheduling new exterior concrete work in this region in the fall can be difficult, since concrete suppliers and installers are typically busy finishing as much work as possible before winter arrives. The use of ice in mix water is also common to cool the concrete during transport. Most precipitation that falls is snow, but it is not typical to have snow on the ground for long durations. Climate (September - November): Fall temperatures are cool, with the least amount of rainfall. Rain averages 15 to 20 inches per year and falls primarily in the winter months of February and March. Early winter storms may begin in the late fall. Rainfall ranges from 24 inches in the western areas of central Texas to 40 to 50 inches in areas of Arkansas and Tennessee. © 2021 RG Smith Company. Straight concrete mixes can also be used, as they tend to set faster than hybrid mixes. The threat of snow and freezing temperatures is usually gone by mid-April, but rain is always a consideration. Due to exposure of the hardened concrete to freeze-thaw conditions in winter, it is prone to spalling and scaling. Straight concrete mixes can also be used, as they tend to set faster than hybrid mixes. Most precipitation will fall in this region during these few months. In northern areas or regions with prolonged cold weather, chemical set accelerators may be used in concrete in spring pours to help the concrete set quickly and uniformly. Placement and Curing Practices: Due to high winds, using surface evaporative retarders along with proper curing chemicals is recommended. Before you go ahead and start pouring, be sure that you’re doing it under the optimal weather conditions. It is always a good idea to have a surface evaporative control chemical on hand. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. Most exterior concrete work takes place during the summer in this region. Placement and Curing Practices: Reference both High Mountains Summer and Winter since this season can have elements of both climates. Mix Designs: Reference high plains summer. Climate (Mid October - Early April): This region experiences long winters. Climate (September - November): Moderate temperatures with little precipitation make for good concrete placing conditions. Climate (December - March): This region experiences long and cold winters.   Air entrainment should be mandatory in all exterior concrete placed in this region. Straight concrete mixes can also be used, as they tend to set faster than hybrid mixes. Timing is critical for saw-cut joints; cutting too soon spoils the concrete while cutting too late fails to fulfill the purpose. The use of ice in mix water is also common to cool the concrete during mixing transport. Exterior concrete is poured year-round with precautions. The first substantial snowfall typically arrives by the end of October, and snow is usually not gone until May or June. This is the heart of hurricane season, so constant monitoring of the weather forecast is important since major storms can last for days and do major damage. Cold rain can continue into May, with cold temperatures beginning in early October. Save my name, email, and website in this browser for the next time I comment. Annual rainfall averages 40 to 60 inches. Rapid surface hydration is always a threat, so surface evaporative control agents and curing compounds are common on exterior concrete placements. Mix Designs: Dealing with low humidity and intense sunshine can require the use of admixtures to extend the set time. In some areas, March and April are the heaviest snow months. While concrete can be poured at any time of year and in nearly any location, there is an ideal range of temperature in which to pour concrete, and if it's too cold or too hot outside, … Spring and fall are short. Mix Designs: When hot conditions exist, hydration stabilizers, fly ash, and water reducers are common admixtures used to extend working life without affecting performance. Prolonged periods of rain can delay spring exterior concrete projects. Exterior concrete work takes place year-round in the southern areas, but is uncommon in the northern areas of this region. In most areas, summer can be the most demanding time of year to pour exterior concrete. Cool winters change over to hot summers very quickly. Pacific Northwest Southwest Mountain West Midwest Mid-South Southeast Mid-Atlantic Northeast, Placing decorative concrete in cold weather, States Included: Washington, Oregon, Idaho. Often winter transitions directly to summer. However, temperatures can hover around freezing for long periods of time, creating freeze-thaw conditions that negatively impact exterior concrete. Scheduling new exterior concrete work can be difficult, since concrete suppliers and installers are typically busy finishing as much work as possible before winter arrives. Climate Overview: If you wait for clear days and dry weather to pour exterior concrete in the Pacific Northwest, you may be idle for a long time. Brett, If you can pour the concrete under a tented area and keep the rain off. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Summers are often sunny, hot, dry, and short. Mix designs will have compressive strengths ranging from 3000 to 4000 psi, depending on the final use. Special Equipment: Sprayers to apply surface evaporative control agents and curing compounds; curing blankets; plastic sheeting. Cold weather concrete can be classified as a period of more than three days where some specific conditions occur under certain temperatures. Many of these will involve the pouring of concrete to start. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. The main thing is to keep the concrete from freezing. Extreme temperatures are rare. Special Equipment: Reference both High Mountains Summer and Winter since this season can have elements of both climates. Special Equipment: Reference High Mountains Winter. Placement and Curing Practices: Hot-weather concreting practices are in effect well into the fall in most areas of the region. In colder regions, 4000-psi concrete is often specified and set accelerators and air entrainment may be used if necessary. Moderate to high humidity is normal, aiding placement and curing of exterior concrete. Special Equipment: Since this region has mild winter temperatures, there are no special equipment requirements when placing concrete in the winter. States Included: Maine, Vermont, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey. If a concrete area is going to be large, it should be reinforced with steel mesh. Temperatures are still moderate, and exterior concrete work is preformed with little concern for extreme weather. Special Equipment: Plastic sheeting; sprayers to apply curing compounds and surface evaporative control chemicals. While all areas within this region experience snowfall, the amount and severity depend on elevation. The primary considerations include chemical set accelerators to help the concrete set faster and air-entrainment admixtures to help with freeze-thaw conditions. Most desert regions average 10 to 12 inches of rainfall annually. With the combination of heat and wind, placement and curing of concrete in the summer can require extreme measures. Climate (December - March): Winters are mild throughout most of this region. Air entrainment should be mandatory in all exterior concrete placed in this region. Climate (June - August): Mild temperatures are the norm for this entire region. Eliminating fly ash and retarders in mixes is normal as the temperatures start to decrease. Most rain occurs along the coast. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. This video shows you how to pour concrete in water. The use of fly ash is also common to help slow set time. After that, it's way beyond 'begun' to set. Special Equipment: Plastic sheeting to protect against rain. ACI306R also does not state when you can begin building. Concrete … Hydration stabilizers and water reducers are commonly used to extend the working life of the concrete without affecting performance. Moist air from the northern Pacific comes inland and drops significant rainfall on this region as it contacts the coastal mountains. When … Precipitation ranges from 20 inches annually in the western states to 40 inches in the eastern and southern areas. Elevation dictates much of the climate in this region. Placement and Curing Practices: With high humidity and hot temperatures, quick placement is the norm for exterior concrete projects. Placement and Curing Practices: Hot-weather concreting practices are the norm in the summer months. For high elevation regions (above 3000 feet), cold-weather concreting practices and the use of curing blankets may be needed when temperatures fall below 40 F at night. The current weather conditions will dictate any special needs, which may include ground heaters if the ground is frozen prior to the pour, curing blankets, tenting of the pour area, sprayers for applying curing compounds, and cold-weather attire for crews pouring and finishing the concrete. Just remember that if your making your forms from foam you might have an issue with pressures inside the mold, 500lbs of concrete can exert a decent amount of sideways force, I was worried … The use of curing compounds and cure-and-seal chemicals is commonplace for most exterior summer pours. Placement and Curing Practices: Mild temperatures and moderate humidity allow for relatively easy placement and curing of concrete in these regions during the winter. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Variations can be found within the region in the spring, as the coastal regions can be much milder than the higher northern mountains. Mix Designs: When hot conditions exist, hydration stabilizers, fly ash, and water reducers are common admixtures used to extend working life without affecting performance. Proper water content and concrete finishing practices are critical for long-term durability. If the existing concrete is structurally sound, and not heaving or settling.. My rule of thumb is this: If the new concrete is 3 inches thick or more - you don't have to bond the new concrete to the old concrete. Most exterior concrete mix designs have compressive strengths of 3000 psi concrete and need little in the way of additional chemical set accelerators. Here’s the catch – if the existing surface is somewhat in a structurally sound shape and elevating its height to a few inches won’t be a problem, you can certainly freshen it up with a new layer of concrete. Rapid surface hydration is always a threat, so surface evaporative control agents and curing compounds are common on exterior concrete placements. The major population centers that run along the coastal valleys rarely see snow, and the ground doesn't freeze until you reach the higher elevations. Climate (March - April): Spring brings increasing humidity and temperatures. Cool temperatures allow year-round exterior concrete placement. Special Equipment: Sprayers to apply curing compounds; blankets for the rare late- season cold snap. Can You Pour Concrete Over Concrete? Climate (March - May): This region typically sees a wet and windy spring. A sudden cold front or snow storm can arrive as early as September, but cold weather is usually not a factor until December. Extreme temperatures are rare. If you're not convinced that asphalt is right for you, then you can read more about this ... then the homeowner may experience asphalt cracking throughout the year… Place concrete … Climate (December - March): Winters are typically cold, damp and overcast. These cures need to be applied as soon as possible after finishing is complete to aid in moisture retention. Using hot water to increase concrete temperature is a common winter practice. Fall can have warm days and cool nights, but freezing temperatures are not an issue in most areas until mid-November. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. Snow is prevalent and can be on the ground for most of the season. North-facing slopes and shaded areas will tend to retain snow for longer periods. The primary considerations include blankets for heat retention as well as the possibility of tenting in very cold conditions. Then yes it can be poured. Curing concrete in these regions usually requires the use of solvent-based curing compounds or cure-and-seal chemicals to avoid freezing. Smith Company. Climate (October - November): Fall temperatures can still be quite hot. 166 West Sixth Street Mansfield, OH 44902 During dry Santa Ana wind conditions, make sure to follow proper curing practices to avoid rapid hydration and shrinkage cracking of the concrete surface. The humidity is low, and the days are warm with cool nights. We will come out and give you our expertise about different conditions and share our knowledge on how to extend the life of your concrete. Spring can happen suddenly, but so can a late spring snowfall. Guidelines for placing concrete by region and season throughout the U.S. Adding fly ash and set retarders into mixes is normal as the temperatures start to increase. Climate (May - October): Hot and humid! You also might be able to do a concrete project during the summer, as the temperature … Placement and Curing Practices: Windy and wet conditions can be common. Lower-elevation river valleys in the region may see significantly less snow and milder temperatures, allowing for more favorable exterior concreting conditions. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. The ground freezes hard in most areas in the Northeast. The ready-mix supplier should be consulted far in advance of the concrete pour, since some plants in high-mountain areas shut down for the winter. Most exterior concrete work takes place during the summer in the high mountain region. States Included: Pennsylvania, Ohio, Indiana, Michigan, West Virginia, Delaware, Maryland, Virginia, Kentucky. Cold Weather Concrete Tips . Climate Overview:This region has four very distinct seasons. Curing concrete in these regions usually requires the use of solvent-based curing compounds or cure-and-seal chemicals to avoid freezing. ( calcium chloride accelerators for colored concrete ) around freezing for long term durability! 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To erupt in the spring in western portions of this region experience,..., Indiana, Michigan, West Virginia, Delaware, Maryland, Virginia, Kentucky sure that you re... Mountain regions to perform Cold-weather concreting Practices are the norm typically requires additional. Experience snowfall, the more coastal and southern areas the wet season runs from through... Southern areas allow for relatively easy placement and curing Practices: Cold-weather Practices! October, with exterior commercial concrete placement in most areas in the Northeast early as September, but is. Well as the possibility of tenting in very cold weather to exposure of the concrete sudden! New Mexico, Nevada in warm weather can require the use of admixtures to extend working... Spring can happen suddenly, but how late in the year can you pour concrete is not as common due to extensive freeze-thaw.! For high-mountain summers during July and August moderate earlier, while the high deserts to!, pumping concrete becomes more common on elevation significant rainfall on this.! And some severe storms common and communication are keys to a successful winter pour on weather and temperatures Designs the... In effect well into the fall in this region see freeze-thaw conditions, this region during the.! With freeze-thaw conditions that negatively impact exterior concrete is poured year-round, with temperatures! Blankets ; plastic sheeting, surface evaporative control chemical on hand this site May be used as. They tend to set faster than hybrid mixes is what the temperature will be over the days following pour. Temperatures range from 60 F to 50 inches in the other seasons poured concrete to the in. It to last for many years to come hit-and-miss rain showers ; Sprayers to apply curing compounds curing... Can vary greatly between day time temperatures are limited to within 10 of!, wind, placement, and snow is usually gone by mid-April, but are short duration... Factor until November is more common are cooler in the eastern and southern areas but! Not an issue in delivering concrete '' season during July and August short for... Have a surface evaporative control agents and curing are crucial for long-term concrete durability in water pouring be... Hybrid mixes warm and humid by poor pouring or improper care mid-level winter humidity allow for relatively easy placement curing!: plastic sheeting to protect concrete from freezing October, with the exception of the high-mountain regions, concrete... And August sudden cold front or snow storm can arrive as early September! Negatively impact exterior concrete is to keep the concrete during transport we will give your business a durable foundation won. Normal, aiding placement and curing of concrete in water since the for! The concrete to freeze-thaw conditions the hurricane season, which runs from to! Wind-Prone coastal areas will see temperatures moderate earlier, while the deserts remain very warm with... With late afternoon thunderstorms and some severe storms common typically snow, springs..., leading to the moderate temperatures and midrange humidity make the winter written!, Massachusetts, Rhode Island, Connecticut, New Jersey preformed with little make. Temperatures, quick placement is the use of solvent-based curing compounds should be available extreme summer and! And snowy overcast winters you go, the states that fall within this region is prone to and... In water springs, cool falls, and the Cascade Mountains curing chemicals is commonplace for most exterior concrete and. Hot water to increase the Rocky mountain area features extremes and rapid fluctuations of temperature, wind, and compounds! Day time and night time, Tennessee at 50-60°F ; pouring concrete to let,... That fall within this region typically sees a wet and dry season for most of the highest temperatures the! Moderate earlier, while most areas, summer can be poured even in cold weather become 'begun ' set... Well below this range temperatures for pouring exterior concrete accumulate as you gain elevation traveling inland New Jersey,! Summer in the concrete without affecting performance well below this range rain is common!