Charles Mix County Climate
Charles Mix County, South Dakota
Avg Annual Temp
48.8°F
Annual Precip
24.9"
Annual Snowfall
39.5"
Extreme Heat Days
33.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Charles Mix County Weather
Warmer Conditions in the Great Plains
Charles Mix County is warmer than many of its neighbors, posting an average annual temperature of 48.8°F. This remains below the national average but represents one of the milder pockets in the northern interior.
Above Average State Warmth
The county is significantly warmer and wetter than the state average, which sits at 45.6°F and 22.7 inches of rain. Charles Mix averages 48.8°F and receives a generous 24.9 inches of annual precipitation.
A Warm Spot Near the Border
Charles Mix is warmer than nearby Clay County, which averages 47.6°F. It also faces more extreme heat, recording 33 days above 90°F compared to 23 days in Clay.
Hot Summers and Significant Snowfall
July is hot with an average of 75.6°F and over a month's worth of 90-degree days. Winter remains snowy, dropping 39.5 inches of snow on average between December and March.
Balancing Humidity and High Heat
With 33 days of extreme heat, central air conditioning is a critical home feature for residents. Gardeners can take advantage of the 24.9 inches of rain, which is higher than most South Dakota counties.
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.