Lisbon, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.3 °C (low) to 13 °C (high). Annual precipitation averages 1254.8 Millimeters. 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 | -11.7 °C | -1.3 °C | 89.41 mm |
| February | -10.8 °C | 0.4 °C | 87.38 mm |
| March | -5.4 °C | 5 °C | 99.57 mm |
| April | 0.6 °C | 11.9 °C | 112.78 mm |
| May | 6.6 °C | 18.4 °C | 91.69 mm |
| June | 12.1 °C | 23.1 °C | 120.14 mm |
| July | 15.3 °C | 26.4 °C | 95.25 mm |
| August | 14.5 °C | 25.8 °C | 89.15 mm |
| September | 10.3 °C | 21.7 °C | 100.84 mm |
| October | 4.2 °C | 14.6 °C | 139.19 mm |
| November | -1.3 °C | 7.9 °C | 111.76 mm |
| December | -7.1 °C | 2.1 °C | 117.6 mm |
| Annual | 2.3 °C | 13 °C | 1254.76 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |