Eagle Lake, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2 °C (low) to 9.5 °C (high). Annual precipitation averages 1085.3 Millimeters. Eagle Lake is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.6 °C | -6.9 °C | 82.04 mm |
| February | -18 °C | -5.1 °C | 65.79 mm |
| March | -11.4 °C | 0.5 °C | 73.66 mm |
| April | -2.8 °C | 8 °C | 82.04 mm |
| May | 3.8 °C | 16.5 °C | 85.85 mm |
| June | 9.2 °C | 21.8 °C | 105.66 mm |
| July | 12.3 °C | 24.4 °C | 109.98 mm |
| August | 11.2 °C | 23.9 °C | 96.01 mm |
| September | 6.7 °C | 19.4 °C | 94.23 mm |
| October | 0.9 °C | 11.3 °C | 108.2 mm |
| November | -4.6 °C | 3.7 °C | 87.63 mm |
| December | -12.5 °C | -3 °C | 94.23 mm |
| Annual | -2 °C | 9.5 °C | 1085.32 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |