Clayton County Climate
Clayton County, Georgia
Avg Annual Temp
62.7°F
Annual Precip
51.7"
Annual Snowfall
1.5"
Extreme Heat Days
52.95
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Clayton County Weather
A Subtropical Haven in the South
Clayton County maintains an average annual temperature of 62.7°F, placing it significantly warmer than the national median. This humid subtropical climate experiences over 51 inches of annual precipitation, keeping the landscape lush throughout the year.
Cooler than the Georgia Average
Despite its Southern location, Clayton's 62.7°F average temperature sits exactly one degree below the Georgia state average of 63.7°F. This positioning makes it one of the more temperate areas in a state known for sweltering summers.
Comparing the Atlanta Metro Fringe
Clayton remains warmer than nearby Cobb County, which averages 60.1°F, but is more similar to Coweta County at 61.4°F. It bridges the gap between the cooler northern highlands and the deep Southern heat found further downstate.
Sweltering Summers and Mild Winters
July brings intense heat with an average of 80.3°F and 53 days per year surpassing the 90°F mark. Winters remain brief and mild, averaging 45.7°F with only 1.5 inches of annual snowfall on record.
Prepare for High Humidity and Heat
Residents should prioritize efficient HVAC systems to combat nearly two months of extreme heat days. Outdoor enthusiasts should plan activities for the morning hours to avoid the peak humidity that accompanies the 51.7 inches of annual rainfall.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.