Marion Center, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.9 °C (low) to 15.5 °C (high). Annual precipitation averages 1281.7 Millimeters. Marion Center 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 | -7.5 °C | 1.6 °C | 107.19 mm |
| February | -7 °C | 3.3 °C | 82.04 mm |
| March | -3.2 °C | 8.2 °C | 102.36 mm |
| April | 2.4 °C | 16 °C | 111.25 mm |
| May | 8.2 °C | 21.6 °C | 104.39 mm |
| June | 13.2 °C | 25.6 °C | 127.76 mm |
| July | 15.4 °C | 27.7 °C | 127.25 mm |
| August | 14.6 °C | 27.2 °C | 115.82 mm |
| September | 10.9 °C | 23.5 °C | 112.27 mm |
| October | 4.7 °C | 16.9 °C | 86.36 mm |
| November | -0.4 °C | 10 °C | 99.06 mm |
| December | -4.3 °C | 4 °C | 105.92 mm |
| Annual | 3.9 °C | 15.5 °C | 1281.67 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |