Carbon County Climate

Carbon County, Montana

JanFebMarAprMayJunJulAugSepOctNovDec44.3°AVG °F

Avg Annual Temp

44.3°F

Annual Precip

15.7"

Annual Snowfall

74.4"

Extreme Heat Days

23.33333333333333

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet= snowfall
0.5"
0.6"
1.0"
2.0"
3.2"
2.2"
1.1"
0.8"
1.4"
1.7"
0.8"
0.6"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Seasonal Overview

Comfort ZoneSpring35°51°6.1"Summer60°68°4.0"Fall33°57°3.9"Winter24°26°1.7"20°40°60°80°100°

National Comparison

Warmer than 11% of US counties
Wetter than 8% of US counties
More seasonal variation than 48% of US counties

Climate Profile

About Carbon County Weather

Rugged Terrain With Cool Averages

Carbon County’s annual average temperature of 44.3°F sits below the national median. Its location at the foot of the Beartooth Mountains dictates this temperate mountain climate.

Aligned With Montana's Thermal Average

At 44.3°F, the county is just slightly warmer than the Montana state average of 43.7°F. It balances high-altitude cold with warmer valley winds.

Heavy Snowfall Compared to Neighbors

Carbon County receives a massive 74.4 inches of snow annually, nearly double that of neighboring Big Horn. Its 15.7 inches of precipitation is also slightly above the state average.

Brisk Winters and High Snow Totals

July averages 67.9°F with 23 days reaching over 90°F. However, winter is the dominant season, featuring a 24.9°F average and significant snow accumulation.

Heavy-Duty Snow Removal is Essential

With over 74 inches of snow, residents must have reliable four-wheel drive and professional-grade snow blowers. Homeowners should also check roof load ratings for heavy winter accumulation.

Frequently Asked Questions

What is the average temperature in Carbon County?
The average annual temperature in Carbon County, MT is 44.3°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Carbon County get?
Carbon County receives an average of 15.7 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
Does it snow in Carbon County?
Yes, Carbon County receives an average of 74.4 inches of snowfall per year according to NOAA climate normals.
How hot does Carbon County get in summer?
The average summer temperature (June-August) in Carbon County is 64.7°F. The county experiences an average of 23.33333333333333 days per year above 90°F.
How cold are winters in Carbon County?
The average winter temperature (December-February) in Carbon County is 24.9°F. January, typically the coldest month, averages 24.3°F.

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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.

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