Caribou County Climate
Caribou County, Idaho
Avg Annual Temp
43.0°F
Annual Precip
15.4"
Annual Snowfall
—
Extreme Heat Days
20.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Caribou County Weather
A High Altitude Rocky Mountain Climate
Caribou County's annual average temperature of 43.0°F is nearly 10 degrees below the national median. It receives a modest 15.4 inches of precipitation annually, typical for the high mountain basins.
Colder and Drier Than Idaho Benchmarks
Caribou County is 3.5 degrees colder than the Idaho state average of 46.5°F. Its 15.4 inches of precipitation is just under the state average of 17.0 inches.
Slightly Warmer Winters Than Butte County
Caribou County's winter average of 22.7°F is about three degrees warmer than Butte County. It shares a similar arid profile with Bonneville County, with both averaging around 15 inches of moisture.
Chilly Winters and Mild Summer Evenings
Winter temperatures average 22.7°F, while summer averages are a comfortable 63.7°F. Despite the cool average, the county still sees 20 days per year where temperatures reach 90°F.
Preparing for Thermal Swings and Dryness
The 20 days of extreme heat combined with cold 21.5°F Januarys require versatile HVAC systems. While snowfall data is limited, the winter averages suggest residents should be prepared for significant frost and ice.
Frequently Asked Questions
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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.