Lake Arrowhead, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.5 °C (low) to 13.6 °C (high). Annual precipitation averages 1282.7 Millimeters. Lake Arrowhead 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 | -12.1 °C | -0.8 °C | 88.65 mm |
| February | -11.7 °C | 0.9 °C | 91.44 mm |
| March | -6.2 °C | 5.5 °C | 108.97 mm |
| April | -0.1 °C | 12.6 °C | 117.6 mm |
| May | 6 °C | 19.3 °C | 96.01 mm |
| June | 11.6 °C | 24.1 °C | 116.59 mm |
| July | 14.7 °C | 27.3 °C | 102.62 mm |
| August | 13.7 °C | 26.6 °C | 94.49 mm |
| September | 9.4 °C | 22.2 °C | 98.04 mm |
| October | 3.1 °C | 14.9 °C | 141.22 mm |
| November | -2.2 °C | 8.2 °C | 109.73 mm |
| December | -8 °C | 2.3 °C | 117.35 mm |
| Annual | 1.5 °C | 13.6 °C | 1282.71 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 |