Benson, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.6 °F (low) to 59.5 °F (high). Annual precipitation averages 45.2 Inches. 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 | 18.2 °F | 35.2 °F | 3.33 in. |
| February | 19.6 °F | 38.0 °F | 3.07 in. |
| March | 26.2 °F | 46.5 °F | 3.87 in. |
| April | 37.1 °F | 60.4 °F | 3.74 in. |
| May | 46.9 °F | 70.1 °F | 4.39 in. |
| June | 55.2 °F | 77.4 °F | 4.58 in. |
| July | 59.1 °F | 81.2 °F | 4.25 in. |
| August | 57.4 °F | 80.0 °F | 4.13 in. |
| September | 50.5 °F | 73.5 °F | 3.77 in. |
| October | 39.6 °F | 62.0 °F | 3.34 in. |
| November | 30.4 °F | 50.0 °F | 3.28 in. |
| December | 23.5 °F | 39.6 °F | 3.47 in. |
| Annual | 38.6 °F | 59.5 °F | 45.22 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |