East Millinocket, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.4 °C (low) to 11.6 °C (high). Annual precipitation averages 1151.1 Millimeters. East Millinocket 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.7 °C | -3.9 °C | 86.61 mm |
| February | -15.2 °C | -2.1 °C | 69.34 mm |
| March | -8.8 °C | 3.2 °C | 90.17 mm |
| April | -1.6 °C | 10.1 °C | 93.98 mm |
| May | 4.7 °C | 17.8 °C | 92.46 mm |
| June | 10.2 °C | 22.8 °C | 104.9 mm |
| July | 13.6 °C | 25.9 °C | 91.19 mm |
| August | 12.2 °C | 25.3 °C | 92.46 mm |
| September | 7.9 °C | 21.1 °C | 89.92 mm |
| October | 1.8 °C | 13.2 °C | 125.98 mm |
| November | -3.4 °C | 6.2 °C | 104.9 mm |
| December | -10.3 °C | -0.3 °C | 109.22 mm |
| Annual | -0.4 °C | 11.6 °C | 1151.13 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |