Wellsboro, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.2 °F (low) to 57.9 °F (high). Annual precipitation averages 38.9 Inches. Wellsboro is located in USDA Plant Hardiness Zone 5b. 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 | 13.8 °F | 32.4 °F | 2.51 in. |
| February | 14.7 °F | 35.4 °F | 1.74 in. |
| March | 21.9 °F | 43.6 °F | 2.9 in. |
| April | 32.1 °F | 57.4 °F | 3.25 in. |
| May | 42.9 °F | 69.7 °F | 3.39 in. |
| June | 52.0 °F | 77.3 °F | 4.04 in. |
| July | 56.2 °F | 81.4 °F | 3.34 in. |
| August | 54.9 °F | 79.9 °F | 3.99 in. |
| September | 47.9 °F | 73.0 °F | 4.2 in. |
| October | 37.1 °F | 60.7 °F | 3.72 in. |
| November | 28.4 °F | 47.4 °F | 3.02 in. |
| December | 20.9 °F | 37.0 °F | 2.76 in. |
| Annual | 35.2 °F | 57.9 °F | 38.86 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |