| 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 |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 58c - Green Mountains/Berkshire Highlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 05677 - Waterbury Center, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 7 | 18 | 30 | 41 | 50 | 55 | 53 | 45 | 34 | 26 | 12 | 31 |
| Avg Max Temp (°F) | 25 | 28 | 38 | 51 | 65 | 73 | 77 | 75 | 66 | 54 | 41 | 30 | 52 |
| Avg Precip (In.) | 2.93 | 2.26 | 2.97 | 3.17 | 3.67 | 4.04 | 4.18 | 4.69 | 3.94 | 3.63 | 3.66 | 3.06 | 42.2 |