Climate change in Clearwater County, Idaho
Since 1979, Clearwater County, Idaho has warmed 1.9°F, with 2 more days above 90°F, about the same number of nights above 70°F and 6% less precipitation a year.
- Average temperature: +1.9°F
- Summer highs (Jun–Aug): +2.5°F
- Winter lows (Dec–Feb): +2.5°F
- Precipitation: −6%
- Wettest day of the year: −1%
- Longest dry spell: +6 days
- Days above 90°F: +2 days
- Nights above 70°F: +0 days
- Freezing nights: −2 days
- Frost-free season: +17 days
- Muggy days: +0 days
- Summer heat index (Jun–Aug): +2.2°F
- Extreme fire-weather days: +24 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.