Roger Mills County Climate
Roger Mills County, Oklahoma
Avg Annual Temp
58.6°F
Annual Precip
27.6"
Annual Snowfall
7.1"
Extreme Heat Days
74.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Roger Mills County Weather
Arid Plains with Wide Temperature Swings
Roger Mills County features a 58.6°F annual average, slightly cooler than the state average but warmer than the national median. It is characterized by its dry climate, receiving only 27.6 inches of rain annually.
Drier and Cooler than the State Average
The county is significantly drier than the Oklahoma average of 37.2 inches, falling nearly 10 inches short. Its 58.6°F average also makes it one of the cooler counties in the state overall.
Western Border Climate Extremes
Located on the Texas border, the county experiences more snowfall (7.1 inches) than most of central and eastern Oklahoma. The lack of humidity compared to eastern neighbors leads to more dramatic daily temperature changes.
Fierce Heat and Snowy Winters
Summers are brutal with 74 days of 90°F+ heat, while winters are the snowiest in this group at 7.1 inches. This creates a landscape of extremes, from a dry 81.4°F July to a 36.3°F January.
Ready for Drought and Snow
The low 27.6-inch rainfall requires drought-resistant landscaping and careful water management. Residents also need to prepare for winter storms, as the 7.1 inches of snow can create drifts in the open plains.
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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.