| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F 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 Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dsa - Humid Continental Climate - Dry Warm Summer |
| Ecoregion: | 16f - Foothill Shrublands-Grasslands |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 83629 - Horseshoe Bend, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 24 | 29 | 34 | 41 | 48 | 54 | 53 | 45 | 36 | 28 | 20 | 36 |
| Avg Max Temp (°F) | 36 | 43 | 52 | 61 | 70 | 80 | 89 | 88 | 78 | 64 | 46 | 36 | 62 |
| Avg Precip (In.) | 1.96 | 1.78 | 1.77 | 1.41 | 1.3 | .88 | .39 | .37 | .73 | 1 | 2 | 2.09 | 15.7 |