Cape Elizabeth, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.2 °C (low) to 12.3 °C (high). Annual precipitation averages 1211.8 Millimeters. Cape Elizabeth is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 0.6 °C | 89.66 mm |
| February | -5.9 °C | 1.4 °C | 89.41 mm |
| March | -2.2 °C | 4.7 °C | 107.19 mm |
| April | 2.9 °C | 10.1 °C | 109.73 mm |
| May | 8 °C | 15.4 °C | 92.96 mm |
| June | 12.9 °C | 20.6 °C | 106.93 mm |
| July | 16 °C | 23.8 °C | 86.87 mm |
| August | 16.2 °C | 23.7 °C | 84.33 mm |
| September | 12.9 °C | 20.2 °C | 99.06 mm |
| October | 7.7 °C | 14.3 °C | 122.68 mm |
| November | 2.7 °C | 8.9 °C | 106.43 mm |
| December | -2.7 °C | 3.9 °C | 116.59 mm |
| Annual | 5.2 °C | 12.3 °C | 1211.84 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |