| 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 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Sep.1 - Sep. 10 | |
| Average Last Frost Date: | Jul. 1 - Jul. 10 | |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer | |
| Ecoregion: | 15m - Kootenai Valley | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 83805 - Bonners Ferry, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 24 | 28 | 34 | 41 | 47 | 50 | 50 | 42 | 34 | 28 | 22 | 35 |
| Avg Max Temp (°F) | 33 | 39 | 49 | 60 | 69 | 76 | 83 | 83 | 72 | 57 | 41 | 33 | 58 |
| Avg Precip (In.) | 2.75 | 1.86 | 1.59 | 1.46 | 1.81 | 1.68 | 1.08 | 1.11 | 1.19 | 1.62 | 3.13 | 2.99 | 22.27 |