| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| 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 04043 - Kennebunk, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 16 | 26 | 35 | 45 | 54 | 60 | 58 | 50 | 39 | 31 | 20 | 37 |
| Avg Max Temp (°F) | 33 | 36 | 44 | 55 | 67 | 76 | 82 | 80 | 72 | 61 | 49 | 38 | 58 |
| Avg Precip (In.) | 3.92 | 3.22 | 4.14 | 4.31 | 3.88 | 3.6 | 3.45 | 3.25 | 3.59 | 4.25 | 4.83 | 4.15 | 46.59 |