Custer County Climate
Custer County, Oklahoma
Avg Annual Temp
60.3°F
Annual Precip
30.3"
Annual Snowfall
6.5"
Extreme Heat Days
80.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Custer County Weather
Warmer and Drier Than National Medians
Custer County averages 60.3°F annually, placing it among the warmer counties in the United States. Its 30.3 inches of rain indicates a drier-than-average national profile.
A Perfect Match for State Temperatures
The county's 60.3°F average temperature aligns almost perfectly with Oklahoma's 60.4°F state average. However, it receives 7 inches less rain than the state norm.
Transitioning Toward Western Aridity
Custer County receives 30.3 inches of rain, which is notably less than the central Oklahoma average. It shares the windy, dry characteristics of its western neighbors.
Extreme Heat Defines the Summer
The area records 80 days of extreme heat above 90°F annually. Winters are typically dry with a modest 6.5 inches of snowfall.
Drought-Resistant Landscaping is Key
Low precipitation and 82.6°F July averages make water-wise gardening a smart choice. HVAC systems should be serviced for the 80+ days of high heat.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.