Stormstown, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39 °F (low) to 58.6 °F (high). Annual precipitation averages 43.8 Inches. Stormstown is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.1 °F | 33.7 °F | 3.02 in. |
| February | 19.0 °F | 36.6 °F | 2.62 in. |
| March | 26.0 °F | 45.5 °F | 3.47 in. |
| April | 36.9 °F | 59.0 °F | 3.67 in. |
| May | 47.4 °F | 69.4 °F | 4.12 in. |
| June | 55.9 °F | 77.0 °F | 4.24 in. |
| July | 59.9 °F | 81.2 °F | 3.88 in. |
| August | 58.3 °F | 79.6 °F | 3.98 in. |
| September | 50.9 °F | 72.8 °F | 4.43 in. |
| October | 40.5 °F | 60.9 °F | 3.9 in. |
| November | 31.0 °F | 49.1 °F | 3.19 in. |
| December | 23.7 °F | 38.0 °F | 3.31 in. |
| Annual | 39 °F | 58.6 °F | 43.83 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |