| 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 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 |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03864 - Ossipee, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 11 | 21 | 31 | 42 | 52 | 57 | 55 | 47 | 36 | 28 | 17 | 34 |
| Avg Max Temp (°F) | 28 | 32 | 41 | 53 | 66 | 75 | 80 | 77 | 68 | 58 | 44 | 33 | 55 |
| Avg Precip (In.) | 3.77 | 2.92 | 3.71 | 3.66 | 4.05 | 3.79 | 4.11 | 4.07 | 3.64 | 4.02 | 3.98 | 3.67 | 45.41 |