| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5a: -20°F to -15°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 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 80i - Sagebrush Steppe Valleys |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 83241 - Grace, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 14 | 21 | 28 | 36 | 42 | 47 | 46 | 38 | 29 | 21 | 12 | 29 |
| Avg Max Temp (°F) | 31 | 36 | 45 | 55 | 65 | 75 | 84 | 84 | 73 | 60 | 42 | 32 | 57 |
| Avg Precip (In.) | 1.29 | 1.14 | 1.43 | 1.39 | 2.13 | 1.36 | 1.1 | 1.23 | 1.32 | 1.35 | 1.16 | 1.16 | 16.07 |