Corson County Climate
Corson County, South Dakota
Avg Annual Temp
44.1°F
Annual Precip
18.8"
Annual Snowfall
39.6"
Extreme Heat Days
25.4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Corson County Weather
Dry and Chilly Northern Plains
Corson County averages 44.1°F annually, reflecting the cold, dry environment of the northern Great Plains. This temperature is significantly lower than the national median of approximately 53°F.
Cooler and Drier Than the State
Corson falls below the South Dakota average in both temperature and moisture. It averages 44.1°F and 18.8 inches of precipitation, while the state averages 45.6°F and 22.7 inches.
Consistent with Regional Averages
Corson’s 44.1°F average temperature is nearly identical to neighboring Campbell County’s 44.3°F. It experiences slightly more extreme heat days than Campbell, averaging 25 days above 90°F.
Harsh Winters and Hot Peaks
The county sees a dramatic seasonal range, from a 15.2°F average in January to 72.0°F in July. Winter brings 39.6 inches of snow, making for a long and difficult cold season.
Prioritize Winter Safety and Insulation
Residents must prepare for 39.6 inches of snow and cold winter averages of 17.9°F. Emergency kits for vehicles are essential during the long, snowy winters in this rural area.
Frequently Asked Questions
What is the average temperature in Corson County?
How much rain does Corson County get?
Does it snow in Corson County?
How hot does Corson County get in summer?
How cold are winters in Corson County?
Track your own weather in Corson County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.