Emlenton, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39 °F (low) to 61 °F (high). Annual precipitation averages 44.9 Inches. Emlenton 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 | 18.3 °F | 35.4 °F | 3.27 in. |
| February | 19.1 °F | 38.4 °F | 2.5 in. |
| March | 26.1 °F | 47.5 °F | 3.38 in. |
| April | 35.7 °F | 61.7 °F | 3.91 in. |
| May | 46.3 °F | 72.4 °F | 3.83 in. |
| June | 55.9 °F | 80.0 °F | 5.11 in. |
| July | 59.9 °F | 83.7 °F | 4.76 in. |
| August | 58.6 °F | 82.7 °F | 3.99 in. |
| September | 51.7 °F | 76.0 °F | 4.05 in. |
| October | 40.4 °F | 63.8 °F | 3.38 in. |
| November | 31.4 °F | 50.6 °F | 3.36 in. |
| December | 24.1 °F | 39.7 °F | 3.39 in. |
| Annual | 39 °F | 61 °F | 44.93 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |