| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F |
| 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: | 83b - Champlain Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 05488 - Swanton, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 9 | 20 | 34 | 46 | 55 | 60 | 58 | 49 | 39 | 29 | 15 | 35 |
| Avg Max Temp (°F) | 26 | 28 | 39 | 52 | 66 | 76 | 80 | 78 | 69 | 57 | 44 | 32 | 54 |
| Avg Precip (In.) | 2.02 | 1.49 | 2.12 | 2.71 | 3.15 | 3.38 | 3.66 | 4.06 | 3.58 | 3.16 | 3.09 | 2.16 | 34.6 |