Mountrail County Climate
Mountrail County, North Dakota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
38.7°F
Annual Precip
18.0"
Annual Snowfall
48.5"
Extreme Heat Days
10
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
1,768
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Mountrail County
Climate Verdict
Mountrail County has a cold, with an average annual temperature of 38.7°F, semi-arid conditions with only 18.0 inches of annual precipitation, rare extreme heat with only 10.2 days above 90°F annually, moderate snowfall of 48.5 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are severe, with January averaging a frigid 8.4°F. summers are pleasantly cool with July averaging 66.8°F. Residents experience a substantial 58°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Mountrail County closely matches the North Dakota statewide average temperature of 40.9°F.
Climate Profile
About Mountrail County Weather
Among the Nation's Coldest Counties
Mountrail County's 38.7°F average annual temperature is among the lowest in the continental U.S. This sub-40-degree average creates a truly northern climate profile.
Significantly Colder than State Average
The county is much colder than the 41.0°F North Dakota average. It also experiences 48.5 inches of snow, which is higher than many other parts of the state.
A Regional Snow Leader
Mountrail's 48.5 inches of snow far exceeds Mercer's 33.4 inches. It also sees only 10 extreme heat days, making it much cooler than neighboring McKenzie.
Brutal Winters and Mild Summers
Winters are long and cold, with a January average of just 8.4°F. Summers remain pleasant and mild, with a July average of 66.8°F and very few days over 90°F.
Invest in Heavy Winter Gear
A high-powered snow blower is essential for the nearly 50 inches of annual snow. High-performance home heating is a must to combat the 11.4°F winter average.
Frequently Asked Questions
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Track your own weather in Mountrail County
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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.