Willacy County Climate
Willacy County, Texas
Avg Annual Temp
73.9°F
Annual Precip
25.4"
Annual Snowfall
0.2"
Extreme Heat Days
114.45
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Willacy County Weather
Deep South Subtropical Heat
Willacy County is one of the warmest places in America, with a 73.9°F average that is nearly 20 degrees above the national median. This region stays warm almost year-round with very little cold weather.
A Thermal High in Texas
At 73.9°F, Willacy is much hotter than the Texas state average of 65.5°F. It sits in the state's southernmost tier, where tropical air masses dominate the local weather patterns.
Hot and Semi-Dry Valley
The county's 25.4 inches of annual rain is lower than the 31.9-inch state average. It is significantly drier than the eastern Gulf Coast but shares the same intense heat as its Rio Grande Valley neighbors.
Endless Summer and Balmy Winters
Summers are long, averaging 84.8°F with 114 days reaching 90°F. Winters are the warmest in the state, averaging 61.3°F with virtually no snowfall recorded at 0.2 inches.
Year-Round Cooling is Required
HVAC systems must be built for near-constant cooling, as even winter temperatures average a balmy 61.3°F. Light, breathable clothing is the only wardrobe requirement for this 114-day annual heat cycle.
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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.