| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F |
| 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: | 58l - Northern Piedmont |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 05851 - Lyndonville, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 3 | 4 | 16 | 29 | 40 | 49 | 54 | 52 | 44 | 34 | 25 | 11 | 30 |
| Avg Max Temp (°F) | 25 | 29 | 39 | 52 | 67 | 76 | 80 | 77 | 68 | 55 | 42 | 30 | 53 |
| Avg Precip (In.) | 2.8 | 2.09 | 2.59 | 2.76 | 3.33 | 3.93 | 3.94 | 4.17 | 3.59 | 3.35 | 3.3 | 2.99 | 38.84 |