| 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 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 4b: -25°F to -20°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 12h - Mountain Home Uplands |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 83647 - Mountain Home, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 24 | 29 | 35 | 43 | 50 | 56 | 55 | 45 | 35 | 27 | 20 | 37 |
| Avg Max Temp (°F) | 38 | 45 | 54 | 62 | 72 | 82 | 92 | 91 | 80 | 66 | 48 | 38 | 64 |
| Avg Precip (In.) | 1.36 | .99 | 1.21 | .94 | .88 | .62 | .39 | .21 | .67 | .77 | 1.36 | 1.41 | 10.8 |