Schellsburg, 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 16.3 °C (high). Annual precipitation averages 1005.6 Millimeters. Schellsburg is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 2.4 °C | 69.85 mm |
| February | -6.5 °C | 4.4 °C | 61.21 mm |
| March | -2.9 °C | 9.2 °C | 82.04 mm |
| April | 2.7 °C | 16.7 °C | 91.95 mm |
| May | 8.3 °C | 22 °C | 106.17 mm |
| June | 13 °C | 26.4 °C | 100.33 mm |
| July | 15.4 °C | 28.7 °C | 80.01 mm |
| August | 14.3 °C | 27.9 °C | 85.85 mm |
| September | 10.4 °C | 24.3 °C | 93.47 mm |
| October | 4.2 °C | 17.6 °C | 79.76 mm |
| November | -1.1 °C | 10.8 °C | 75.95 mm |
| December | -4.7 °C | 4.9 °C | 78.99 mm |
| Annual | 3.8 °C | 16.3 °C | 1005.58 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |