Wilson County Climate
Wilson County, Texas
Avg Annual Temp
69.6°F
Annual Precip
32.8"
Annual Snowfall
0.0"
Extreme Heat Days
129.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Wilson County Weather
South Texas warmth surpasses national averages
Wilson County features a warm 69.6°F annual average temperature, placing it well above the U.S. national median. The local climate is characterized by long, hot summers and brief, mild winters.
Consistently hotter than the state average
The county averages over four degrees warmer than the Texas statewide average of 65.5°F. This makes it one of the more thermally intense regions in the southern half of the state.
Drier than the Gulf Coast
With 32.8 inches of rain, Wilson is slightly wetter than the state average but drier than its neighbors to the east. It experiences more extreme heat than nearby San Antonio, totaling 130 days over 90°F.
Dominant summer heat patterns
Summer temperatures average 84.2°F, while January remains a comfortable 51.9°F. Snow is nonexistent, and the county faces extreme heat for more than a third of the year.
Invest in summer resilience
Given the 130 days of extreme heat, robust attic insulation and sun-shading are essential for local homes. Plan for high water usage during the dry, 84.8°F July peaks.
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.