Deuel County Climate
Deuel County, South Dakota
Avg Annual Temp
42.4°F
Annual Precip
27.5"
Annual Snowfall
60.7"
Extreme Heat Days
6.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Deuel County Weather
Cool Temps and Significant Snow
Deuel County records a cool 42.4°F annual average, placing it well below the national median. This climate is defined by long, snowy winters and exceptionally mild, pleasant summers.
One of South Dakota's Coldest Counties
Ranking as one of the coldest counties in the state, Deuel sits more than 3 degrees below the 45.6°F South Dakota average. Its eastern location also brings significantly higher moisture levels than its western neighbors.
A Regional Peak for Snowfall
The county receives 27.5 inches of precipitation annually, far exceeding the state's 22.7-inch average. This leads to a massive 60.7 inches of snowfall, making it one of the snowiest spots in the region.
Brief Summers and Heavy Snow
Summer remains mild with only 6 days exceeding 90°F and a July average of 70.1°F. Conversely, winter hits hard with a December-to-February average of just 15.0°F and heavy accumulation.
Prioritize Snow Management Tools
Homeowners must prioritize heavy-duty snow removal equipment to handle the 60.7-inch annual snowfall. The mild summers mean air conditioning is often a luxury rather than a constant necessity.
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.