Bennett County Climate
Bennett County, South Dakota
Avg Annual Temp
47.0°F
Annual Precip
21.6"
Annual Snowfall
47.8"
Extreme Heat Days
27.966666666666665
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Bennett County Weather
A Warmer Pocket in the Great Plains
Bennett County's 47.0°F annual average remains cooler than the national median of 53°F but represents a milder zone for the region. It experiences a semi-arid influence with 21.6 inches of annual precipitation.
One of the State's Warmer Counties
The county sits 1.4 degrees above the state average of 45.6°F, making it one of the warmer spots in South Dakota. This warmth is particularly evident in its milder winter averages compared to northern counties.
Heavy Snow Despite Warmer Air
Bennett receives a substantial 47.8 inches of snow, far surpassing nearby Buffalo County's 18.9 inches. While it is drier than the state average for total rain, it leads the region in winter accumulation.
Intense Heat and Moderate Winters
The county faces 28 days of extreme heat above 90°F, even though July averages a manageable 72.6°F. Winters are relatively mild for South Dakota, with January temperatures staying up at 23.4°F.
Winter Gear and Water Conservation
With nearly 48 inches of annual snow, residents need robust winter gear and reliable four-wheel drive. During the 28 days of extreme heat, efficient irrigation and cooling systems are critical.
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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.