| 2023 Hardiness Zone: | 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 |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 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 05468 - Milton, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 9 | 21 | 33 | 45 | 54 | 60 | 58 | 49 | 39 | 29 | 16 | 35 |
| Avg Max Temp (°F) | 26 | 28 | 39 | 53 | 67 | 76 | 80 | 78 | 68 | 56 | 43 | 32 | 54 |
| Avg Precip (In.) | 2.23 | 1.66 | 2.35 | 2.91 | 3.28 | 3.58 | 3.96 | 4.14 | 3.79 | 3.21 | 3.16 | 2.29 | 36.56 |