Dawson County Climate
Dawson County, Montana
Avg Annual Temp
46.6°F
Annual Precip
14.7"
Annual Snowfall
23.1"
Extreme Heat Days
37.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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.
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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.