Corsica, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.4 °F (low) to 57.4 °F (high). Annual precipitation averages 47.4 Inches. Corsica is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.7 °F | 32.4 °F | 3.77 in. |
| February | 17.7 °F | 35.3 °F | 2.78 in. |
| March | 24.5 °F | 44.3 °F | 3.66 in. |
| April | 35.1 °F | 57.8 °F | 4.18 in. |
| May | 45.4 °F | 68.7 °F | 4.09 in. |
| June | 53.8 °F | 75.7 °F | 4.92 in. |
| July | 57.7 °F | 79.5 °F | 4.9 in. |
| August | 56.4 °F | 78.7 °F | 4.09 in. |
| September | 49.8 °F | 71.8 °F | 4.12 in. |
| October | 39.3 °F | 59.8 °F | 3.49 in. |
| November | 29.9 °F | 47.6 °F | 3.64 in. |
| December | 22.9 °F | 36.7 °F | 3.79 in. |
| Annual | 37.4 °F | 57.4 °F | 47.43 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°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 |