Benton, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.5 °C (low) to 12.9 °C (high). Annual precipitation averages 1129.3 Millimeters. Benton 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.9 °C | -1.9 °C | 81.28 mm |
| February | -12.1 °C | -0.1 °C | 69.6 mm |
| March | -6.3 °C | 4.7 °C | 88.39 mm |
| April | 0.1 °C | 11.8 °C | 97.28 mm |
| May | 6.2 °C | 18.6 °C | 88.39 mm |
| June | 11.6 °C | 23.5 °C | 102.62 mm |
| July | 14.9 °C | 26.5 °C | 84.84 mm |
| August | 13.9 °C | 26.1 °C | 89.92 mm |
| September | 9.6 °C | 21.8 °C | 94.74 mm |
| October | 3.6 °C | 14.7 °C | 126.49 mm |
| November | -1.9 °C | 7.7 °C | 102.87 mm |
| December | -8.2 °C | 1.4 °C | 102.87 mm |
| Annual | 1.5 °C | 12.9 °C | 1129.29 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |