| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°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 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 82h - Penobscot Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04449 - Hudson, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 7 | 19 | 31 | 42 | 51 | 57 | 55 | 46 | 35 | 27 | 13 | 32 |
| Avg Max Temp (°F) | 27 | 30 | 39 | 52 | 65 | 74 | 79 | 77 | 68 | 56 | 43 | 32 | 54 |
| Avg Precip (In.) | 3.54 | 2.67 | 3.42 | 3.37 | 3.45 | 3.53 | 3.33 | 3.21 | 3.69 | 3.56 | 3.9 | 3.55 | 41.22 |