McCone County Climate
McCone County, Montana
Avg Annual Temp
44.8°F
Annual Precip
13.7"
Annual Snowfall
—
Extreme Heat Days
30.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About McCone County Weather
Extreme Continentality in Eastern Montana
McCone County's 44.8°F annual average masks some of the most dramatic temperature swings in the country. The area is semi-arid, receiving just 13.7 inches of total precipitation each year.
Warmer Summers Than Most of Montana
The county averages 44.8°F, over a degree warmer than the state median. Its July average of 71.7°F is significantly higher than the mountain counties to the west.
Far Hotter and Drier Than Meagher
McCone experiences 31 extreme heat days, more than four times the number seen in Meagher County. Its January is also much harsher, dropping to an average of 17.4°F compared to Meagher's 23.5°F.
Blistering July and Frigid January
July is intense here with a 71.7°F average and a full month of days over 90°F. While local snowfall data is not fully recorded, the 17.4°F January average signals a brutal winter season.
Prepare for the 90-Degree Peak
Reliable air conditioning is a must for the 31 days of extreme heat each summer. Residents should also invest in cold-weather vehicle kits and home insulation to survive the frigid 19.9°F winter average.
Frequently Asked Questions
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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.