| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Sep.1 - Sep. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 15t - Stillwater-Swan Wooded Valley | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 59937 - Whitefish, MT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 17 | 23 | 29 | 37 | 43 | 46 | 45 | 37 | 29 | 23 | 16 | 30 |
| Avg Max Temp (°F) | 29 | 35 | 44 | 55 | 64 | 72 | 80 | 80 | 68 | 54 | 37 | 29 | 54 |
| Avg Precip (In.) | 1.67 | 1.29 | 1.06 | 1.3 | 2.28 | 2.66 | 1.81 | 1.44 | 1.16 | .93 | 1.82 | 1.9 | 19.32 |