Leeds, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 12.8 °C (high). Annual precipitation averages 1242.6 Millimeters. Leeds is located in USDA Plant Hardiness Zone 5b. 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 | -12.4 °C | -1.9 °C | 91.44 mm |
| February | -11.6 °C | -0.3 °C | 81.28 mm |
| March | -6.1 °C | 4.6 °C | 93.22 mm |
| April | 0.3 °C | 11.7 °C | 109.22 mm |
| May | 6.4 °C | 18.5 °C | 96.27 mm |
| June | 11.8 °C | 23.3 °C | 125.73 mm |
| July | 14.9 °C | 26.5 °C | 99.82 mm |
| August | 14.1 °C | 25.9 °C | 93.22 mm |
| September | 9.7 °C | 21.8 °C | 95.5 mm |
| October | 3.6 °C | 14.5 °C | 137.41 mm |
| November | -1.9 °C | 7.6 °C | 109.22 mm |
| December | -7.8 °C | 1.5 °C | 110.24 mm |
| Annual | 1.8 °C | 12.8 °C | 1242.57 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |