Treasure County Climate
Treasure County, Montana
Avg Annual Temp
45.9°F
Annual Precip
14.9"
Annual Snowfall
42.3"
Extreme Heat Days
34.65
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Treasure County Weather
Warmer and drier than neighbors
Treasure County averages 45.9°F annually, which is warmer than most of Montana but still below the national median. It receives 14.9 inches of precipitation, typical for the semi-arid high plains of the American West.
A warm spot in Montana
At 45.9°F, Treasure County is significantly warmer than the state average of 43.7°F. This warmth is driven by intense summers where heat can be persistent and extreme.
High heat on the Yellowstone
The county experiences 35 days of extreme heat annually, rivaling Yellowstone County's totals. This is nearly double the heat days of Sweet Grass or Wheatland counties to the west.
Intense summers and moderate snow
July is hot with an average of 71.5°F, while the summer-wide average is a warm 68.2°F. Winter remains cold with a 24.1°F average and 42.3 inches of annual snowfall.
Prioritize cooling and irrigation
With 35 days of 90°F heat, reliable air conditioning is more important here than in most other Montana counties. Gardeners should plan for supplemental irrigation to offset the relatively low 14.9 inches of annual rainfall.
Frequently Asked Questions
What is the average temperature in Treasure County?
How much rain does Treasure County get?
Does it snow in Treasure County?
How hot does Treasure County get in summer?
How cold are winters in Treasure County?
Track your own weather in Treasure 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.