| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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 4b: -25F to -20F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 17g - Mid-elevation Sedimentary Mountains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 59715 - Bozeman, MT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 16 | 21 | 28 | 36 | 43 | 48 | 46 | 38 | 31 | 21 | 14 | 30 |
| Avg Max Temp (°F) | 33 | 38 | 44 | 52 | 61 | 71 | 78 | 78 | 68 | 57 | 41 | 34 | 55 |
| Avg Precip (In.) | 1.4 | 1.27 | 1.96 | 2.75 | 3.68 | 3.07 | 1.53 | 1.68 | 2.08 | 2 | 1.48 | 1.46 | 24.36 |