| 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. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83b - Champlain Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 05443 - Bristol, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 7 | 19 | 32 | 45 | 54 | 58 | 56 | 47 | 36 | 28 | 14 | 34 |
| Avg Max Temp (°F) | 27 | 28 | 39 | 51 | 65 | 74 | 78 | 76 | 67 | 55 | 43 | 32 | 53 |
| Avg Precip (In.) | 2.3 | 1.84 | 2.59 | 2.89 | 3.58 | 3.6 | 3.94 | 4.37 | 3.92 | 3.4 | 3.32 | 2.48 | 38.23 |