McCone County Climate
McCone County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.8°F
Annual Precip
13.7"
Annual Snowfall
—
Extreme Heat Days
31
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
2,400
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: McCone County
Climate Verdict
McCone County has a cool, averaging 44.8°F annually, arid conditions receiving just 13.7 inches of precipitation annually, occasional hot days — 30.8 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.4°F. summers are warm — July averages 71.7°F. Residents experience a substantial 54°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for McCone County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
McCone County closely matches the Montana statewide average temperature of 43.7°F.
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 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.