| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 1 - May 10 |
| 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 05661 - Morrisville, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 2 | 3 | 15 | 28 | 39 | 49 | 53 | 51 | 43 | 32 | 24 | 10 | 29 |
| Avg Max Temp (°F) | 25 | 28 | 38 | 52 | 67 | 75 | 79 | 77 | 67 | 55 | 42 | 30 | 53 |
| Avg Precip (In.) | 2.47 | 1.9 | 2.48 | 2.78 | 3.42 | 3.75 | 3.73 | 4.13 | 3.54 | 3.29 | 3.22 | 2.65 | 37.36 |