| 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 Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | ET - Tundra Climate |
| Ecoregion: | 58p - White Mountains/Blue Mountains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03581 - Gorham, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 7 | 17 | 29 | 40 | 50 | 54 | 52 | 44 | 34 | 25 | 12 | 31 |
| Avg Max Temp (°F) | 26 | 29 | 38 | 50 | 64 | 72 | 77 | 75 | 66 | 55 | 42 | 31 | 52 |
| Avg Precip (In.) | 2.05 | 1.81 | 2.01 | 2.68 | 3.08 | 3.65 | 3.49 | 3.64 | 3.19 | 3.55 | 3.14 | 2.44 | 34.75 |