Auburn, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36 °F (low) to 55.4 °F (high). Annual precipitation averages 46.5 Inches. Auburn is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.6 °F | 29.4 °F | 3.19 in. |
| February | 12.2 °F | 32.2 °F | 3.18 in. |
| March | 22.1 °F | 40.8 °F | 3.72 in. |
| April | 33.3 °F | 53.2 °F | 4.31 in. |
| May | 44.1 °F | 65.2 °F | 3.45 in. |
| June | 53.8 °F | 73.9 °F | 4.49 in. |
| July | 59.6 °F | 80.0 °F | 3.58 in. |
| August | 58.3 °F | 78.8 °F | 3.33 in. |
| September | 50.6 °F | 71.3 °F | 3.82 in. |
| October | 39.4 °F | 58.2 °F | 5.03 in. |
| November | 29.5 °F | 46.2 °F | 4.08 in. |
| December | 19.0 °F | 35.5 °F | 4.32 in. |
| Annual | 36 °F | 55.4 °F | 46.5 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |