McLennan County Climate
McLennan County, Texas
Avg Annual Temp
66.4°F
Annual Precip
37.4"
Annual Snowfall
0.3"
Extreme Heat Days
105.66666666666669
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About McLennan County Weather
Warm and humid subtropical
McLennan County averages 66.4°F annually, well above the national median temperature. It experiences the classic humid subtropical climate typical of the Interstate 35 corridor.
Slightly warmer than state average
The county's average of 66.4°F is nearly a full degree warmer than the Texas state average of 65.5°F. This makes it a consistently warm hub in Central Texas.
Wetter than the western plains
With 37.4 inches of annual rain, McLennan is much wetter than McCulloch's 27.4 inches. It sees 106 days of extreme heat, very similar to McCulloch's 107 days.
Hot summers and crisp winters
Summers are intense with an average of 83.5°F and 106 days over 90°F. Winters are mild but can be chilly, averaging 48.8°F with only 0.3 inches of snowfall.
Beat the humidity and heat
Excellent home insulation helps manage both the 106 days of heat and the 37.4 inches of rain. High-performance cooling and moisture-control systems are recommended for local residents.
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.