Wilkes-Barre, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.4 °F (low) to 61.4 °F (high). Annual precipitation averages 42.4 Inches. Wilkes-Barre is located in USDA Plant Hardiness Zone 7a. 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 | 19.1 °F | 36.0 °F | 2.54 in. |
| February | 20.0 °F | 39.0 °F | 2.41 in. |
| March | 27.6 °F | 47.5 °F | 2.6 in. |
| April | 37.9 °F | 60.9 °F | 3.58 in. |
| May | 48.2 °F | 72.3 °F | 3.6 in. |
| June | 57.4 °F | 80.3 °F | 4.59 in. |
| July | 61.8 °F | 85.2 °F | 4.37 in. |
| August | 60.0 °F | 83.2 °F | 3.81 in. |
| September | 52.8 °F | 76.2 °F | 4.72 in. |
| October | 42.0 °F | 63.5 °F | 4.27 in. |
| November | 32.9 °F | 51.9 °F | 2.85 in. |
| December | 25.2 °F | 41.2 °F | 3.09 in. |
| Annual | 40.4 °F | 61.4 °F | 42.43 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°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 |