| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Sep.1 - Sep. 10 | |
| Average Last Frost Date: | Jun. 21 - Jun. 30 | |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer | |
| Ecoregion: | 15s - Spokane Valley Outwash Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 83835 - Hayden, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 25 | 29 | 35 | 42 | 49 | 54 | 53 | 45 | 37 | 30 | 24 | 37 |
| Avg Max Temp (°F) | 35 | 41 | 49 | 58 | 67 | 74 | 83 | 83 | 73 | 60 | 43 | 36 | 58 |
| Avg Precip (In.) | 3.13 | 2.42 | 2.31 | 1.85 | 2.26 | 1.97 | 1.04 | 1.14 | 1.09 | 1.66 | 3.33 | 3.4 | 25.62 |