Brooks, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.4 °F (low) to 54.1 °F (high). Annual precipitation averages 48.2 Inches. Brooks 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.0 °F | 27.1 °F | 3.7 in. |
| February | 10.2 °F | 30.7 °F | 3.22 in. |
| March | 20.1 °F | 39.1 °F | 3.86 in. |
| April | 33.2 °F | 52.4 °F | 4.32 in. |
| May | 44.4 °F | 64.4 °F | 3.72 in. |
| June | 53.4 °F | 73.2 °F | 4.28 in. |
| July | 59.3 °F | 78.9 °F | 3.34 in. |
| August | 57.8 °F | 78.0 °F | 3.47 in. |
| September | 49.8 °F | 70.2 °F | 3.92 in. |
| October | 39.1 °F | 56.6 °F | 5.4 in. |
| November | 29.8 °F | 44.7 °F | 4.46 in. |
| December | 18.1 °F | 33.3 °F | 4.51 in. |
| Annual | 35.4 °F | 54.1 °F | 48.2 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |