Lavaca County Climate
Lavaca County, Texas
Avg Annual Temp
71.7°F
Annual Precip
40.4"
Annual Snowfall
0.1"
Extreme Heat Days
117.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lavaca County Weather
Significant Warmth Near the Gulf
Lavaca County is exceptionally warm, with an annual average temperature of 71.7°F that far exceeds national norms. This placement in the coastal plains ensures a very long growing season and high humidity.
Warmer Than the Texas Standard
With an average of 71.7°F, Lavaca is much hotter than the state average of 65.5°F. It is also wetter than the state average, receiving 40.4 inches of rain annually compared to 31.9 inches.
Intense Heat in the Coastal Region
Lavaca County experiences 117 days of extreme heat annually, more than many of its northern neighbors. This persistent warmth is paired with a generous 40.4 inches of rainfall.
Sweltering Summers and Brief Winters
July averages 85.8°F, and the county endures nearly four months of temperatures over 90°F. Winters are among the mildest in the state, with an average temperature of 57.0°F and only 0.1 inches of snow.
Protecting Against Heat and Humidity
Residents must plan for 117 days of extreme heat by ensuring HVAC systems are robust and staying hydrated during the 85.2°F summer average. With 40.4 inches of rain, moisture control and mold prevention are key for home 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.