Dawson County Climate
Dawson County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.6°F
Annual Precip
14.7"
Annual Snowfall
23.1"
Extreme Heat Days
38
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
2,733
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Dawson County
Climate Verdict
Dawson County has a cool, averaging 46.6°F annually, arid conditions receiving just 14.7 inches of precipitation annually, occasional hot days — 37.6 per year above 90°F, moderate snowfall of 23.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 19.1°F. summers are warm — July averages 74.0°F. Residents experience a substantial 55°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Dawson County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Dawson County closely matches the Montana statewide average temperature of 43.7°F, the county experiences 15.935454931972789 more extreme heat days than the state average.
Climate Profile
About Dawson County Weather
Moderate temperatures for the north
Dawson County averages 46.6°F annually, positioned as a relatively temperate zone within the context of the northern United States. The area is quite dry, receiving only 14.7 inches of precipitation per year.
Warmest in the region
Dawson sits 2.9°F above the Montana state average of 43.7°F, making it one of the state's warmer counties. Its annual precipitation is nearly identical to the state average, providing a representative look at Montana's plains climate.
Leading the eastern pack
At 46.6°F, Dawson is slightly warmer than its neighbor Custer County at 46.4°F. It is significantly more temperate than Daniels County to the north, which averages over 6 degrees colder.
Hot summers and dry snow
July brings intense heat with 38 days topping 90°F and an average temperature of 74.0°F. Snowfall is modest at 23.1 inches, often arriving in dry, wind-blown bursts during the 21.6°F average winter months.
Equipping for the sun
Summer cooling is a major consideration, as the county experiences over a month's worth of extreme heat days. High-SPF sun protection and ventilated gear are necessary for outdoor work during the 71.0°F average summer 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.