Kersey, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36 °F (low) to 55.5 °F (high). Annual precipitation averages 45.8 Inches. Kersey is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.6 °F | 30.3 °F | 3.47 in. |
| February | 15.3 °F | 33.2 °F | 2.67 in. |
| March | 22.8 °F | 41.8 °F | 3.43 in. |
| April | 33.6 °F | 56.4 °F | 3.97 in. |
| May | 44.0 °F | 67.2 °F | 4.18 in. |
| June | 52.4 °F | 74.0 °F | 4.48 in. |
| July | 56.5 °F | 78.0 °F | 4.21 in. |
| August | 55.2 °F | 76.4 °F | 4.22 in. |
| September | 49.0 °F | 70.0 °F | 4.1 in. |
| October | 38.2 °F | 58.1 °F | 3.82 in. |
| November | 29.4 °F | 45.6 °F | 3.73 in. |
| December | 21.0 °F | 34.7 °F | 3.55 in. |
| Annual | 36 °F | 55.5 °F | 45.83 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |