| 2023 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 |
| 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 1b: -15F to -10F |
| Average First Frost Date: | Frost Year Round |
| Average Last Frost Date: | Aug. 1 - Aug. 10 |
| Koppen-Geiger Climate Zone: | Dsa - Humid Continental Climate - Dry Warm Summer |
| Ecoregion: | 16j - Hot Dry Canyons |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 83622 - Garden Valley, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 21 | 27 | 32 | 39 | 45 | 49 | 48 | 40 | 32 | 26 | 18 | 33 |
| Avg Max Temp (°F) | 34 | 41 | 50 | 60 | 69 | 78 | 86 | 86 | 76 | 63 | 43 | 34 | 60 |
| Avg Precip (In.) | 3.24 | 2.46 | 2.27 | 1.7 | 1.62 | 1.24 | .55 | .47 | 1.05 | 1.32 | 3.04 | 3.34 | 22.3 |