Benson, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.7 °C (low) to 15.3 °C (high). Annual precipitation averages 1148.6 Millimeters. Benson is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | 1.8 °C | 84.58 mm |
| February | -6.9 °C | 3.3 °C | 77.98 mm |
| March | -3.2 °C | 8.1 °C | 98.3 mm |
| April | 2.8 °C | 15.8 °C | 95 mm |
| May | 8.3 °C | 21.2 °C | 111.51 mm |
| June | 12.9 °C | 25.2 °C | 116.33 mm |
| July | 15.1 °C | 27.3 °C | 107.95 mm |
| August | 14.1 °C | 26.7 °C | 104.9 mm |
| September | 10.3 °C | 23.1 °C | 95.76 mm |
| October | 4.2 °C | 16.7 °C | 84.84 mm |
| November | -0.9 °C | 10 °C | 83.31 mm |
| December | -4.7 °C | 4.2 °C | 88.14 mm |
| Annual | 3.7 °C | 15.3 °C | 1148.6 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |