Hamilton County Climate
Hamilton County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
64.5°F
Annual Precip
36.2"
Annual Snowfall
—
Extreme Heat Days
92
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
5,955
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hamilton County
Climate Verdict
Hamilton County has a warm, averaging 64.5°F year-round, moderate rainfall of 36.2 inches per year, significant summer heat with 92.2 days annually above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 45.1°F. summers are hot, with July averaging 83.1°F. The 38°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
Hamilton County closely matches the Texas statewide average temperature of 65.5°F, it is somewhat wetter than average for Texas.
Climate Profile
About Hamilton County Weather
Classic Central Texas warmth and sun
Hamilton County's 64.5°F average annual temperature is substantially higher than the national median. The climate is characterized by long, hot summers and relatively short, mild winters.
A near-perfect match for Texas averages
With an average temperature of 64.5°F, Hamilton County sits just below the state average of 65.5°F. Its 36.2 inches of annual rainfall slightly exceeds the state average of 31.9 inches.
Typical conditions for the Heart of Texas
Hamilton County shares the heat and moisture patterns of its neighbors, experiencing 92 extreme heat days per year. It is wetter than the counties to the west, providing more consistent moisture for the local landscape.
Consistent heat and mild winter nights
July temperatures average 83.1°F, part of a summer season that sees 92 days reach over 90°F. Winters are manageable with a January average of 45.1°F, though specific snowfall data for the county is currently unavailable.
Plan for three months of heat
With 92 days of extreme heat, energy-efficient cooling is a primary concern for residents. Outdoor activities should be planned for the mild winter and spring, where temperatures average between 46.6°F and 64°F.
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.