| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 58u - Moosehead-Churchill Lakes |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04945 - Jackman, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -1 | 1 | 12 | 26 | 37 | 48 | 52 | 50 | 41 | 32 | 23 | 8 | 27 |
| Avg Max Temp (°F) | 21 | 24 | 34 | 46 | 62 | 71 | 76 | 74 | 65 | 52 | 39 | 26 | 49 |
| Avg Precip (In.) | 2.97 | 2.2 | 2.72 | 3.21 | 3.54 | 4.1 | 4.38 | 3.92 | 3.92 | 3.45 | 3.54 | 3.12 | 41.06 |