Average annual temperature is 9.6 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -13.3 °C
Number of sunny days: 216 days
Number of rainy days: 119 days
Number of snow days: 30 days
Look at detailed online map of Kittitas County
* Weather data for Kittitas County United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 7.4 | 9.3 | 13.1 | 24.2 | 29.2 | 30.1 | 33.5 | 37.8 | 30.1 | 23.4 | 11.9 | 9.1 |
| Average daytime temperature (°C) | 3.0 | 4.2 | 7.5 | 11.7 | 22.3 | 23.9 | 29.1 | 29.2 | 22.4 | 15.4 | 6.5 | 3.5 |
| Average temperature (°C) | 0.1 | 0.2 | 2.4 | 6.5 | 15.2 | 16.9 | 21.1 | 21.3 | 15.5 | 10.3 | 3.1 | 1.3 |
| Average night temperature (°C) | -2.5 | -2.6 | -1.6 | 2.2 | 9.3 | 11.1 | 14.1 | 14.9 | 10.4 | 6.2 | 0.3 | -1.2 |
| Absolute minimum temperature (°C) | -13.3 | -12.4 | -6.5 | -4.0 | 4.2 | 5.9 | 10.5 | 9.6 | 2.2 | -2.2 | -5.1 | -6.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.8 | 15.5 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 5.2 | 5.9 | 8.4 | 9.3 | 13.0 | 13.3 | 14.0 | 12.1 | 10.1 | 8.0 | 5.5 | 3.9 |
| Precipitation (mm) | 44 | 27 | 38 | 57 | 9 | 11 | 4 | 10 | 32 | 26 | 60 | 119 |
| Sunny days | 10 | 11 | 12 | 11 | 25 | 27 | 29 | 25 | 20 | 18 | 18 | 10 |
| Rainy days | 15 | 10 | 9 | 16 | 6 | 3 | 2 | 6 | 10 | 13 | 11 | 18 |
| Snow days | 6 | 7 | 10 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
The best time to visit Kittitas County during the most sunny months:
Months with the longest average daylight duration in Kittitas County:
The largest precipitation sum in Kittitas County is at