| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | Jun. 11 - Jun. 20 | |
| Koppen-Geiger Climate Zone: | Dsa - Humid Continental Climate - Dry Warm Summer | |
| Ecoregion: | 15j - Lower Clearwater Canyons | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 83539 - Kooskia, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 28 | 31 | 36 | 42 | 48 | 52 | 51 | 43 | 35 | 30 | 25 | 37 |
| Avg Max Temp (°F) | 38 | 47 | 56 | 65 | 74 | 81 | 89 | 91 | 79 | 64 | 46 | 38 | 64 |
| Avg Precip (In.) | 1.8 | 1.47 | 2.6 | 2.61 | 3.03 | 2.16 | 1.32 | 1.12 | 1.45 | 1.88 | 2.43 | 1.77 | 23.65 |