Hughesville, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.6 °F (low) to 61.1 °F (high). Annual precipitation averages 44.6 Inches. Hughesville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.3 °F | 35.5 °F | 3.33 in. |
| February | 20.4 °F | 38.6 °F | 2.47 in. |
| March | 27.9 °F | 47.6 °F | 3.5 in. |
| April | 38.1 °F | 61.1 °F | 3.83 in. |
| May | 48.6 °F | 72.0 °F | 3.89 in. |
| June | 57.7 °F | 80.0 °F | 4.26 in. |
| July | 61.9 °F | 84.5 °F | 4.43 in. |
| August | 60.5 °F | 82.7 °F | 3.93 in. |
| September | 53.0 °F | 75.8 °F | 4.41 in. |
| October | 42.0 °F | 63.4 °F | 3.93 in. |
| November | 32.6 °F | 51.2 °F | 3.12 in. |
| December | 25.2 °F | 40.3 °F | 3.49 in. |
| Annual | 40.6 °F | 61.1 °F | 44.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |