Milo, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.1 °F (low) to 53.9 °F (high). Annual precipitation averages 44.3 Inches. Milo 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 | 5.3 °F | 26.1 °F | 3.07 in. |
| February | 6.4 °F | 29.6 °F | 2.53 in. |
| March | 17.9 °F | 38.7 °F | 2.87 in. |
| April | 29.9 °F | 51.8 °F | 3.74 in. |
| May | 40.9 °F | 65.0 °F | 3.64 in. |
| June | 50.6 °F | 73.7 °F | 4.72 in. |
| July | 56.5 °F | 79.2 °F | 3.66 in. |
| August | 54.3 °F | 78.4 °F | 3.72 in. |
| September | 46.3 °F | 70.3 °F | 3.68 in. |
| October | 35.7 °F | 56.8 °F | 4.97 in. |
| November | 26.5 °F | 44.0 °F | 3.9 in. |
| December | 14.7 °F | 32.7 °F | 3.75 in. |
| Annual | 32.1 °F | 53.9 °F | 44.25 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |