Little Falls, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 13.6 °C (high). Annual precipitation averages 1265.4 Millimeters. Little Falls 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 | -11.3 °C | -0.6 °C | 88.65 mm |
| February | -10.9 °C | 1.2 °C | 90.42 mm |
| March | -5.5 °C | 5.7 °C | 104.39 mm |
| April | 0.6 °C | 12.3 °C | 114.3 mm |
| May | 6.4 °C | 18.7 °C | 93.73 mm |
| June | 12.1 °C | 23.7 °C | 115.06 mm |
| July | 15.4 °C | 26.9 °C | 97.28 mm |
| August | 14.3 °C | 26.4 °C | 90.42 mm |
| September | 10 °C | 22.2 °C | 99.57 mm |
| October | 3.9 °C | 15.3 °C | 142.24 mm |
| November | -1.4 °C | 8.5 °C | 110.24 mm |
| December | -7.2 °C | 2.7 °C | 119.13 mm |
| Annual | 2.2 °C | 13.6 °C | 1265.43 mm |
| 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |