McLennan County Climate
McLennan County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
66.4°F
Annual Precip
37.4"
Annual Snowfall
0.3"
Extreme Heat Days
106
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
6,477
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: McLennan County
Climate Verdict
McLennan County has a warm, averaging 66.4°F year-round, moderate rainfall of 37.4 inches per year, significant summer heat with 105.66666666666667 days annually above 90°F, light snow averaging 0.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 46.9°F. summers are hot, with July averaging 84.6°F. The 38°F seasonal variation provides noticeable but manageable change. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
McLennan County closely matches the Texas statewide average temperature of 65.5°F, it is also noticeably wetter, receiving 5.5 inches more precipitation than the state average.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.