Climate change in Kittitas County, Washington
Since 1979, Kittitas County, Washington has warmed 2.1°F, with 2 more days above 90°F, about the same number of nights above 70°F and 4% less precipitation a year.
- Average temperature: +2.1°F
- Summer highs (Jun–Aug): +2.8°F
- Winter lows (Dec–Feb): +3.2°F
- Precipitation: −4%
- Wettest day of the year: +18%
- Longest dry spell: +15 days
- Days above 90°F: +2 days
- Nights above 70°F: +0 days
- Freezing nights: −12 days
- Frost-free season: +23 days
- Muggy days: +0 days
- Summer heat index (Jun–Aug): +2.6°F
- Extreme fire-weather days: +18 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.