| 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 4b: -25F to -20F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 11 - Jun. 20 |
| 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 05343 - Jamaica, VT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 7 | 16 | 29 | 40 | 48 | 52 | 50 | 41 | 30 | 24 | 12 | 30 |
| Avg Max Temp (°F) | 27 | 31 | 39 | 51 | 65 | 73 | 78 | 75 | 67 | 56 | 43 | 32 | 53 |
| Avg Precip (In.) | 3.84 | 3.06 | 3.9 | 3.83 | 4.28 | 4.12 | 4.12 | 4.42 | 3.88 | 4.03 | 4.09 | 3.78 | 47.35 |