| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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 3b: -35F to -30F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| 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 05478 - Saint Albans, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 7 | 19 | 32 | 45 | 55 | 60 | 58 | 49 | 38 | 28 | 15 | 34 |
| Avg Max Temp (°F) | 26 | 28 | 39 | 52 | 67 | 75 | 80 | 77 | 69 | 57 | 43 | 31 | 54 |
| Avg Precip (In.) | 2.55 | 1.93 | 2.69 | 3.29 | 3.77 | 3.94 | 4.37 | 4.78 | 4.24 | 3.78 | 3.87 | 2.77 | 41.97 |