Silver Bow County Climate
Silver Bow County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
40.5°F
Annual Precip
12.0"
Annual Snowfall
15.2"
Extreme Heat Days
7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,240
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Silver Bow County
Climate Verdict
Silver Bow County has a cool, averaging 40.5°F annually, arid conditions receiving just 12.0 inches of precipitation annually, rare extreme heat with only 7.35 days above 90°F annually, light snow averaging 15.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 20.8°F. summers are pleasantly cool with July averaging 63.8°F. The 43°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Silver Bow County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Silver Bow County is 3.2°F cooler than the Montana statewide average of 43.7°F, it is somewhat drier than average for Montana.
Climate Profile
About Silver Bow County Weather
A High-Altitude, Dry Climate
Silver Bow County maintains a cool 40.5°F annual average, influenced by its significant elevation. This keeps the county much cooler than the national median throughout the year.
Cooler and Drier Than the State
At 40.5°F, Silver Bow is colder than the 43.7°F state average. It is also exceptionally dry, receiving only 12.0 inches of precipitation compared to the 15.4-inch state norm.
Low Heat and Low Snowfall
Compared to its neighbors, Silver Bow has very few extreme heat days, averaging just 7 per year. Surprisingly, it only sees 15.2 inches of annual snowfall, which is remarkably low for a high-altitude Montana county.
Milder Summers and Moderate Cold
July is very comfortable with an average of 63.8°F, and the county rarely sees extreme heat. Winters are cold but dry, with a January average of 20.8°F and minimal snow accumulation.
Dress in Layers for Dry Cold
Because of the low 12.0-inch annual precipitation, humidifiers are a common household need. Residents can enjoy summers without heavy air conditioning, but should prepare for constant winter chills.
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.