South Eliot, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.4 °F (low) to 57.8 °F (high). Annual precipitation averages 48.2 Inches. South Eliot is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.0 °F | 33.6 °F | 3.49 in. |
| February | 17.5 °F | 36.3 °F | 3.56 in. |
| March | 25.2 °F | 43.6 °F | 4.44 in. |
| April | 35.2 °F | 55.7 °F | 4.56 in. |
| May | 45.2 °F | 65.8 °F | 3.89 in. |
| June | 54.9 °F | 75.3 °F | 4.22 in. |
| July | 60.6 °F | 81.2 °F | 3.7 in. |
| August | 59.2 °F | 80.2 °F | 3.23 in. |
| September | 52.0 °F | 72.8 °F | 3.8 in. |
| October | 40.6 °F | 60.5 °F | 4.9 in. |
| November | 31.5 °F | 49.7 °F | 3.96 in. |
| December | 22.5 °F | 39.0 °F | 4.44 in. |
| Annual | 38.4 °F | 57.8 °F | 48.19 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |