Tattnall County Climate
Tattnall County, Georgia
Avg Annual Temp
66.1°F
Annual Precip
49.8"
Annual Snowfall
0.0"
Extreme Heat Days
92.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Tattnall County Weather
Deep South Warmth and High Humidity
Tattnall County is significantly warmer than the national median, with an annual average of 66.1°F. This coastal plain climate is known for its heavy air and long, hot summers.
Well Above the Georgia Average Temperature
With an annual average of 66.1°F, Tattnall is much warmer than the state average of 63.7°F. It is slightly drier than the rest of the state, averaging 49.8 inches of rain.
Warmer and Drier Than Sumter
Tattnall is nearly two degrees warmer than Sumter County to the west. It also sees nearly 30 more extreme heat days than Sumter, highlighting the intensity of its summer season.
Extreme Heat for Three Full Months
The county endures 92 days per year where temperatures exceed 90°F, peaking with a July average of 81.9°F. Winters are very mild, averaging 49.0°F in January with no recorded snow.
Prioritize Heat Safety and Air Quality
With 92 days of extreme heat, residents must have reliable cooling and should monitor heat indices for outdoor work. Since snow is unheard of, winter prep can focus almost entirely on mild-weather maintenance.
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.