Concrete contractors in Gwinnett County, GA

Concrete conditions in Gwinnett County

Averages from the nearest NOAA climate normals station, Atlanta Peachtree AP, GA (16.9 miles away, 1,002 ft), over 1991–2020.^[1] Conditions can change over short distances, so treat these as a planning guide, not a forecast.

Nights at 32°F or below

49

Days at 90°F or above

53

Precipitation a year

51 in

Average temperature

62°F

Heat and drying

Summer brings about 53 days at 90°F or hotter, 44 of them in June–August. High temperatures speed up setting and drying, which raises the risk of plastic shrinkage cracks. For a summer pour we schedule outside the hottest part of the day and protect the slab from drying too fast. NRMCA's hot-weather guidance covers retarders, early starts and curing.^[4]

Cold and freeze-thaw

Freezing nights are a regular part of winter in Gwinnett County, about 40 of them in December–February, but rare outside it. A pour between late fall and early spring may need the cold-weather precautions ACI describes for air temperatures expected below 40°F. For driveways, walks and patios that freeze while wet, NRMCA recommends air-entrained concrete to resist scaling. Our estimates say whether the mix is air-entrained.^{[2, 3]}

With 51 inches of precipitation a year, we plan how fresh concrete gets covered if rain arrives during or soon after the pour, and slope the finished slab to shed water away from the house.

Homes in Gwinnett County

Gwinnett County has about 340,962 homes. The median home was built in 1996, and 35% were built before 1980. 66% are owner-occupied.^[5]

Planning guides: pouring in summer heat · pouring in cold weather · curing times · driveway thickness

1. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020 (annual and seasonal, by station) (archive c20230404; imported November 6, 2026), station USW00053863.
2. American Concrete Institute, ACI 306R-16: Guide to Cold Weather Concreting (preview) (2016 edition; checked October 6, 2026).
3. National Ready Mixed Concrete Association, CIP 2: Scaling Concrete Surfaces (checked October 30, 2026).
4. National Ready Mixed Concrete Association, CIP 12: Hot Weather Concreting (checked October 30, 2026).
5. U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25003, B25034, B25035) (imported October 30, 2026).