| 2023 Hardiness Zone: | 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 Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 12a - Treasure Valley |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 83661 - Payette, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 25 | 32 | 37 | 45 | 52 | 58 | 56 | 46 | 36 | 28 | 21 | 38 |
| Avg Max Temp (°F) | 36 | 45 | 57 | 65 | 74 | 83 | 91 | 90 | 80 | 67 | 49 | 38 | 65 |
| Avg Precip (In.) | 1.45 | 1.23 | 1.14 | .81 | .98 | .74 | .32 | .32 | .5 | .65 | 1.39 | 1.6 | 11.12 |