Big Horn County Climate
Big Horn County, Montana
Avg Annual Temp
47.0°F
Annual Precip
14.8"
Annual Snowfall
39.1"
Extreme Heat Days
43.47500000000001
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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
What is the average temperature in Big Horn County?
How much rain does Big Horn County get?
Does it snow in Big Horn County?
How hot does Big Horn County get in summer?
How cold are winters in Big Horn County?
Track your own weather in Big Horn County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.