| 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 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| 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: | 59f - Gulf of Maine Coastal Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04042 - Hollis Center, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 13 | 23 | 33 | 43 | 52 | 58 | 56 | 48 | 37 | 29 | 17 | 35 |
| Avg Max Temp (°F) | 32 | 35 | 44 | 55 | 67 | 76 | 82 | 80 | 71 | 60 | 48 | 36 | 57 |
| Avg Precip (In.) | 3.75 | 3.09 | 4.18 | 4.36 | 3.87 | 3.6 | 3.69 | 3.28 | 3.62 | 4.27 | 4.49 | 3.9 | 46.09 |