Benton, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.3 °C (low) to 15.8 °C (high). Annual precipitation averages 1177.6 Millimeters. Benton is located in USDA Plant Hardiness Zone 6b. 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 | -7.6 °C | 1.9 °C | 84.07 mm |
| February | -6.8 °C | 3.4 °C | 62.48 mm |
| March | -2.7 °C | 8.2 °C | 80.52 mm |
| April | 3 °C | 15.7 °C | 100.84 mm |
| May | 8.6 °C | 21.8 °C | 107.7 mm |
| June | 13.7 °C | 26.1 °C | 113.54 mm |
| July | 16.1 °C | 28.6 °C | 118.62 mm |
| August | 15.3 °C | 27.6 °C | 112.52 mm |
| September | 11.2 °C | 23.8 °C | 121.67 mm |
| October | 5 °C | 17.1 °C | 103.38 mm |
| November | 0 °C | 10.4 °C | 81.79 mm |
| December | -4.2 °C | 4.6 °C | 90.42 mm |
| Annual | 4.3 °C | 15.8 °C | 1177.55 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |