Dayton, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 15.2 °C (high). Annual precipitation averages 1169.7 Millimeters. Dayton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | 1.4 °C | 92.2 mm |
| February | -7.2 °C | 3 °C | 68.33 mm |
| March | -3.4 °C | 8.1 °C | 93.22 mm |
| April | 2.3 °C | 15.8 °C | 102.36 mm |
| May | 8.2 °C | 21.4 °C | 101.09 mm |
| June | 13 °C | 25.4 °C | 117.6 mm |
| July | 15.2 °C | 27.4 °C | 116.59 mm |
| August | 14.5 °C | 27.1 °C | 106.17 mm |
| September | 10.7 °C | 23.3 °C | 104.65 mm |
| October | 4.6 °C | 16.5 °C | 83.57 mm |
| November | -0.6 °C | 9.7 °C | 92.96 mm |
| December | -4.6 °C | 3.7 °C | 90.93 mm |
| Annual | 3.8 °C | 15.2 °C | 1169.67 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |