| 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 |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| 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 04238 - Hebron, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 10 | 21 | 32 | 42 | 52 | 58 | 56 | 47 | 36 | 28 | 15 | 34 |
| Avg Max Temp (°F) | 28 | 32 | 41 | 53 | 66 | 75 | 80 | 78 | 69 | 58 | 44 | 33 | 55 |
| Avg Precip (In.) | 4.26 | 3.24 | 4.6 | 4.41 | 4.12 | 4.06 | 3.85 | 3.82 | 3.64 | 4.55 | 4.64 | 4.26 | 49.46 |