Emlenton, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.9 °C (low) to 16.1 °C (high). Annual precipitation averages 1141.2 Millimeters. 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 | -7.6 °C | 1.9 °C | 83.06 mm |
| February | -7.2 °C | 3.6 °C | 63.5 mm |
| March | -3.3 °C | 8.6 °C | 85.85 mm |
| April | 2.1 °C | 16.5 °C | 99.31 mm |
| May | 7.9 °C | 22.4 °C | 97.28 mm |
| June | 13.3 °C | 26.7 °C | 129.79 mm |
| July | 15.5 °C | 28.7 °C | 120.9 mm |
| August | 14.8 °C | 28.2 °C | 101.35 mm |
| September | 10.9 °C | 24.4 °C | 102.87 mm |
| October | 4.7 °C | 17.7 °C | 85.85 mm |
| November | -0.3 °C | 10.3 °C | 85.34 mm |
| December | -4.4 °C | 4.3 °C | 86.11 mm |
| Annual | 3.9 °C | 16.1 °C | 1141.21 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |