Limerick, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.3 °C (low) to 13.3 °C (high). Annual precipitation averages 1269.8 Millimeters. Limerick is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.4 °C | -1.2 °C | 87.63 mm |
| February | -12.2 °C | 0.5 °C | 89.92 mm |
| March | -6.6 °C | 5.2 °C | 107.95 mm |
| April | -0.2 °C | 12.4 °C | 114.55 mm |
| May | 5.8 °C | 19.3 °C | 93.73 mm |
| June | 11.3 °C | 24 °C | 115.57 mm |
| July | 14.3 °C | 27.1 °C | 104.9 mm |
| August | 13.6 °C | 26.4 °C | 96.27 mm |
| September | 9.1 °C | 22.1 °C | 98.3 mm |
| October | 3.1 °C | 14.6 °C | 137.41 mm |
| November | -2.4 °C | 7.8 °C | 108.46 mm |
| December | -8.3 °C | 1.9 °C | 115.06 mm |
| Annual | 1.3 °C | 13.3 °C | 1269.75 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°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 |