Big Horn County Climate
Big Horn County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
47.0°F
Annual Precip
14.8"
Annual Snowfall
39.1"
Extreme Heat Days
43
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,434
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Big Horn County
Climate Verdict
Big Horn County has a cool, averaging 47.0°F annually, arid conditions receiving just 14.8 inches of precipitation annually, occasional hot days — 43.47500000000001 per year above 90°F, moderate snowfall of 39.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.6°F. summers are warm — July averages 72.2°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Big Horn County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Big Horn County is 3.4°F warmer than the Montana statewide average of 43.7°F, the county experiences 21.810454931972796 more extreme heat days than the state average.
Climate Profile
About Big Horn County Weather
Moderate Temperatures for the Northern Plains
Big Horn County maintains an average annual temperature of 47.0°F, which remains cooler than the national median. However, it represents a relatively mild corridor for the northern United States.
Warmer Than the Montana Baseline
The county's 47.0°F average exceeds the Montana state average of 43.7°F. This makes Big Horn one of the warmer counties in a state known for extreme cold.
Hotter Summers Than Regional Peers
Big Horn experiences 43 extreme heat days per year, significantly more than neighboring counties like Carbon or Carter. Its 14.8 inches of annual precipitation is also slightly below the state average.
Intense Summer Heat and Snowy Peaks
July temperatures average 72.2°F, fueled by frequent 90°F days. Winters are more moderate than other parts of the state, though the county still receives 39.1 inches of annual snowfall.
Prepare for Peak Heat and Snow
Efficient air conditioning is vital for the 43 days of extreme heat each summer. Sturdy snow removal equipment is also necessary to manage the nearly 40 inches of annual winter accumulation.
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.