Callahan County Climate
Callahan County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
64.5°F
Annual Precip
29.0"
Annual Snowfall
3.8"
Extreme Heat Days
105
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8a
Minimum winter temperature range for plant survival
6,055
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Callahan County
Climate Verdict
Callahan County has a warm, averaging 64.5°F year-round, moderate rainfall of 29.0 inches per year, significant summer heat with 104.7 days annually above 90°F, light snow averaging 3.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 44.6°F. summers are hot, with July averaging 83.7°F. The 39°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Callahan County closely matches the Texas statewide average temperature of 65.5°F, it is somewhat drier than average for Texas.
Climate Profile
About Callahan County Weather
Warmer Peaks and Cold Dustings
Callahan County’s 64.5°F average temperature sits well above the national median. Unlike many Texas counties, it sees measurable snowfall and more distinct seasonal transitions.
Slightly Cooler Than the Texas Average
The county is slightly cooler than the Texas average of 65.5°F and drier than the 31.9-inch state precipitation mark. Its 29.0 inches of rain reflects its position in the transition zone to West Texas.
Wintry Compared to the Gulf Coast
Callahan sees 3.8 inches of snow annually, a sharp contrast to zero snowfall in counties like Calhoun or Caldwell. It is also significantly drier, receiving 12 inches less rain than its coastal counterparts.
A Blend of Heat and Ice
The county experiences 105 days of extreme heat above 90°F, yet winter brings a chilly January average of 44.6°F. Snowfall is common in winter, averaging nearly 4 inches per year.
Prepare for Both Temperature Extremes
Residents need both powerful air conditioning for the 105 heat days and winter preparedness for occasional snow. Proper home insulation is vital to handle the wide swing between 83.7°F July days and freezing winter nights.
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.