DeWitt County Climate
DeWitt County, Texas
Avg Annual Temp
70.0°F
Annual Precip
36.5"
Annual Snowfall
0.2"
Extreme Heat Days
128.95
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About DeWitt County Weather
A Hot and Humid Gulf Slope
DeWitt County is much warmer than the national average, posting an annual mean temperature of 70.0°F. Its 36.5 inches of annual rain make it a lush, humid environment compared to the national median.
Warmer Than the Texas Average
DeWitt is about 4.5 degrees warmer than the state average of 65.5°F. It also receives 36.5 inches of rain, which is about 4.6 inches more than the typical Texas county.
Coastal Plains Warmth and Humidity
Located inland from the coast, DeWitt shares a similar humid profile with Victoria and Lavaca counties. It experiences significantly more heat days than the counties to its north.
Lengthy Summers and Very Mild Winters
The county endures 129 days of temperatures reaching 90°F or higher each year. Winter is virtually snow-free at 0.2 inches, with a comfortable January average of 53.1°F.
Prepare for Long Periods of Heat
Residents should plan for nearly four months of temperatures over 90°F with robust cooling systems. Outdoor activities are best scheduled for the mild winters, where the average temperature remains a pleasant 54.8°F.
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.