| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| 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 04074 - Scarborough, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 16 | 25 | 35 | 44 | 53 | 59 | 58 | 49 | 38 | 30 | 19 | 37 |
| Avg Max Temp (°F) | 32 | 35 | 43 | 54 | 65 | 75 | 80 | 79 | 71 | 60 | 48 | 37 | 57 |
| Avg Precip (In.) | 4.01 | 3.15 | 4.14 | 4.26 | 3.86 | 3.44 | 3.36 | 3.12 | 3.44 | 4.34 | 4.77 | 4.18 | 46.06 |