Lisbon, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.1 °F (low) to 55.4 °F (high). Annual precipitation averages 49.4 Inches. Lisbon 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.9 °F | 29.7 °F | 3.52 in. |
| February | 12.6 °F | 32.7 °F | 3.44 in. |
| March | 22.2 °F | 41.0 °F | 3.92 in. |
| April | 33.1 °F | 53.4 °F | 4.44 in. |
| May | 43.8 °F | 65.1 °F | 3.61 in. |
| June | 53.7 °F | 73.6 °F | 4.73 in. |
| July | 59.5 °F | 79.5 °F | 3.75 in. |
| August | 58.1 °F | 78.5 °F | 3.51 in. |
| September | 50.5 °F | 71.1 °F | 3.97 in. |
| October | 39.5 °F | 58.3 °F | 5.48 in. |
| November | 29.6 °F | 46.3 °F | 4.4 in. |
| December | 19.2 °F | 35.7 °F | 4.63 in. |
| Annual | 36.1 °F | 55.4 °F | 49.4 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |