Mahanoy City, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.9 °F (low) to 58.8 °F (high). Annual precipitation averages 52.6 Inches. Mahanoy City is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.5 °F | 34.1 °F | 3.73 in. |
| February | 18.7 °F | 36.8 °F | 2.93 in. |
| March | 26.2 °F | 45.3 °F | 3.85 in. |
| April | 36.9 °F | 58.5 °F | 4.27 in. |
| May | 46.8 °F | 69.3 °F | 4.7 in. |
| June | 55.7 °F | 76.9 °F | 5.15 in. |
| July | 60.1 °F | 81.7 °F | 5.1 in. |
| August | 58.1 °F | 79.9 °F | 4.65 in. |
| September | 51.4 °F | 73.1 °F | 5.38 in. |
| October | 40.7 °F | 61.7 °F | 5.02 in. |
| November | 31.3 °F | 49.2 °F | 3.72 in. |
| December | 23.5 °F | 38.9 °F | 4.13 in. |
| Annual | 38.9 °F | 58.8 °F | 52.63 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |