| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 58r - Sebago-Ossipee Hills and Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03855 - New Durham, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 12 | 22 | 32 | 43 | 53 | 58 | 56 | 49 | 38 | 30 | 19 | 35 |
| Avg Max Temp (°F) | 30 | 33 | 42 | 55 | 66 | 75 | 80 | 78 | 70 | 59 | 46 | 34 | 56 |
| Avg Precip (In.) | 3.88 | 3.31 | 4.11 | 4.56 | 4.14 | 4.01 | 3.92 | 3.85 | 3.86 | 4.5 | 4.84 | 4.22 | 49.2 |