Oldham County Climate
Oldham County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.8°F
Annual Precip
18.0"
Annual Snowfall
7.7"
Extreme Heat Days
74
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
4,087
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Oldham County
Climate Verdict
Oldham County has a mild, with an average annual temperature of 56.8°F, semi-arid conditions with only 18.0 inches of annual precipitation, significant summer heat with 73.75 days annually above 90°F, light snow averaging 7.7 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 36.2°F. summers are warm — July averages 78.1°F. The 42°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
Oldham County is 8.7°F cooler than the Texas statewide average of 65.5°F, it is also noticeably drier, receiving 13.9 inches less precipitation than the state average, the county experiences 31.091873382675814 fewer extreme heat days than the state average.
Climate Profile
About Oldham County Weather
A Climate Aligned with the Median
Oldham County averages 56.8°F annually, making it one of the few Texas counties close to the national median temperature. It represents the high, dry, and cool western edge of the state.
Coldest Territory in the Lone Star State
The county is nearly 9 degrees cooler than the Texas average of 65.5°F. It is also quite dry, receiving only 18.0 inches of rain compared to the state average of 31.9 inches.
Arid and Snowy High Plains
Oldham receives significantly less rain than most of Texas but compensates with 7.7 inches of annual snowfall. Its 18 inches of precipitation is less than half of what East Texas counties receive.
Brisk Winters and Balanced Summers
The county sees 74 extreme heat days, with July temperatures peaking at a relatively mild 78.1°F. Winter is cold and snowy, with a January average of 36.2°F and 7.7 inches of snow.
Prepare for the Texas Chill
Residents should focus on home insulation and heating to manage the 37.5°F winter average. Because annual rainfall is only 18.0 inches, water conservation is a critical lifestyle consideration.
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.