Castro County Climate
Castro County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.5°F
Annual Precip
19.4"
Annual Snowfall
8.0"
Extreme Heat Days
69
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,963
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Castro County
Climate Verdict
Castro County has a mild, with an average annual temperature of 56.5°F, semi-arid conditions with only 19.4 inches of annual precipitation, significant summer heat with 68.55 days annually above 90°F, light snow averaging 8.0 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 36.3°F. summers are warm — July averages 76.7°F. The 40°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Castro County is 9.0°F cooler than the Texas statewide average of 65.5°F, it is also noticeably drier, receiving 12.5 inches less precipitation than the state average, the county experiences 36.29187338267582 fewer extreme heat days than the state average.
Climate Profile
About Castro County Weather
Cooler High Plains Territory
At 56.5°F, Castro County is closer to the national median temperature than its coastal neighbors. This semi-arid region is much cooler and drier than the typical Texas profile.
Far Below State Averages
The county's 56.5°F average is nine degrees cooler than the Texas state average of 65.5°F. Rainfall is also sparse, totaling only 19.4 inches compared to the 31.9-inch state benchmark.
Coolest in the Region
Castro is notably cooler than Childress County to the east, which averages 62.3°F. It represents the higher, drier, and windier conditions found on the Llano Estacado.
Snowy Winters and Brief Heat
Winters bring a substantial 8.0 inches of snow and a chilly average of 37.7°F. Summers are relatively mild for Texas, though the county still sees 69 days of extreme heat reaching 90°F.
Dress for Four Real Seasons
Residents need heavy winter gear and snow removal tools given the 8-inch annual snowfall. Xeriscaping is recommended for landscaping because the 19.4 inches of rain provides limited natural irrigation.
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.