| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°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: | 82e - Central Maine Embayment |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04284 - Wayne, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 10 | 21 | 32 | 43 | 52 | 58 | 56 | 48 | 37 | 29 | 15 | 34 |
| Avg Max Temp (°F) | 28 | 32 | 41 | 53 | 66 | 75 | 80 | 78 | 70 | 58 | 45 | 33 | 55 |
| Avg Precip (In.) | 3.72 | 2.81 | 4.09 | 4.05 | 3.94 | 3.91 | 3.58 | 3.52 | 3.66 | 4.17 | 4.25 | 3.81 | 45.5 |