Ashland, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.4 °F (low) to 50.3 °F (high). Annual precipitation averages 40.8 Inches. Ashland 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.1 °F | 21.1 °F | 3.08 in. |
| February | 1.9 °F | 24.1 °F | 2.47 in. |
| March | 13.2 °F | 34.0 °F | 2.7 in. |
| April | 27.6 °F | 47.4 °F | 2.98 in. |
| May | 39.5 °F | 62.7 °F | 3.43 in. |
| June | 49.2 °F | 72.4 °F | 4.09 in. |
| July | 54.7 °F | 77.3 °F | 3.99 in. |
| August | 52.6 °F | 76.2 °F | 3.72 in. |
| September | 44.6 °F | 67.8 °F | 3.45 in. |
| October | 34.6 °F | 53.6 °F | 4.01 in. |
| November | 24.4 °F | 39.8 °F | 3.31 in. |
| December | 10.7 °F | 27.6 °F | 3.56 in. |
| Annual | 29.4 °F | 50.3 °F | 40.79 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |