Athens, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.1 °F (low) to 59.5 °F (high). Annual precipitation averages 36.3 Inches. Athens is located in USDA Plant Hardiness Zone 6a. 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 | 15.7 °F | 33.8 °F | 2.25 in. |
| February | 16.2 °F | 36.2 °F | 1.84 in. |
| March | 23.5 °F | 44.8 °F | 2.8 in. |
| April | 33.7 °F | 58.7 °F | 3.39 in. |
| May | 45.0 °F | 70.8 °F | 2.99 in. |
| June | 54.2 °F | 79.2 °F | 4.04 in. |
| July | 58.5 °F | 83.5 °F | 3.51 in. |
| August | 57.3 °F | 82.1 °F | 3.33 in. |
| September | 50.3 °F | 75.1 °F | 3.89 in. |
| October | 38.8 °F | 61.9 °F | 3.54 in. |
| November | 29.6 °F | 49.4 °F | 2.42 in. |
| December | 22.5 °F | 38.6 °F | 2.32 in. |
| Annual | 37.1 °F | 59.5 °F | 36.32 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |