McLean County Climate
McLean County, North Dakota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
41.2°F
Annual Precip
18.1"
Annual Snowfall
43.6"
Extreme Heat Days
13
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
2,116
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: McLean County
Climate Verdict
McLean County has a cool, averaging 41.2°F annually, semi-arid conditions with only 18.1 inches of annual precipitation, rare extreme heat with only 13.087500000000002 days above 90°F annually, moderate snowfall of 43.6 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 10.6°F. summers are pleasantly cool with July averaging 69.3°F. Residents experience a substantial 59°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
McLean County closely matches the North Dakota statewide average temperature of 40.9°F.
Climate Profile
About McLean County Weather
Upper Midwest Temperature Extremes
McLean County's annual average of 41.2°F is more than 10 degrees cooler than the national median. This climate requires resilient infrastructure to handle large seasonal swings.
Right at the State Average
The county's 41.2°F average temperature perfectly mirrors the North Dakota average of 41.0°F. Precipitation is also typical for the region at 18.1 inches annually.
Typical Snowfall for the Region
The county's 43.6 inches of snow is similar to McKenzie's 42.3 inches but lower than Mountrail's 48.5 inches. This makes it a standard representative for Central North Dakota weather.
Frigid Januaries and Moderate Summers
January brings average temperatures of 10.6°F, while July heats up to 69.3°F. Residents experience about 13 days of extreme heat and a summer average of 67.0°F.
Insulate Against the Winter Chill
With winter averages of 13.8°F, proper attic insulation is a top priority for homeowners. Be ready for significant snow cleanup throughout the 43.6-inch winter season.
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.