Cass County Climate
Cass County, North Dakota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
41.7°F
Annual Precip
23.6"
Annual Snowfall
42.9"
Extreme Heat Days
10
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
2,331
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Cass County
Climate Verdict
Cass County has a cool, averaging 41.7°F annually, semi-arid conditions with only 23.6 inches of annual precipitation, rare extreme heat with only 10.35 days above 90°F annually, moderate snowfall of 42.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are severe, with January averaging a frigid 8.5°F. summers are warm — July averages 70.2°F. Residents experience a substantial 62°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Cass County closely matches the North Dakota statewide average temperature of 40.9°F, it is somewhat wetter than average for North Dakota.
Climate Profile
About Cass County Weather
A Classic Cold Continental Climate
Cass County's average annual temperature of 41.7°F sits more than 13 degrees below the national median. This humid continental climate experiences massive seasonal swings typical of the Upper Midwest.
Warmer and Wetter Than State Averages
The county is slightly warmer than the North Dakota average of 41.0°F. It is also significantly wetter than its peers, receiving 23.6 inches of precipitation compared to the state average of 19.5 inches.
A Milder Choice in the Valley
Compared to Cavalier County to the north, Cass is nearly five degrees warmer on average. It receives 42.9 inches of snow annually, which is standard for the Red River Valley region.
Frigid Winters Meet Ten Heat Days
January is bitter with an average of 8.5°F, while July peaks at a comfortable 70.2°F. Despite the cold, the county still logs 10 days a year where temperatures hit or exceed 90°F.
Prepare for Snow and Seasonal Shifts
Heavy-duty snow removal equipment is essential for managing the 42.9 inches of annual snowfall. Residents should also invest in high-efficiency heating to handle the 12.1°F winter average.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.