Scottdale, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.8 °C (low) to 16.7 °C (high). Annual precipitation averages 1142.2 Millimeters. Scottdale is located in USDA Plant Hardiness Zone 6b. 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 | -6.3 °C | 3.3 °C | 84.84 mm |
| February | -5.9 °C | 4.8 °C | 73.15 mm |
| March | -1.9 °C | 9.9 °C | 89.41 mm |
| April | 3.3 °C | 17.1 °C | 96.52 mm |
| May | 9.1 °C | 22.3 °C | 112.52 mm |
| June | 13.9 °C | 26.6 °C | 119.13 mm |
| July | 16.3 °C | 28.6 °C | 118.36 mm |
| August | 15.6 °C | 28.3 °C | 99.31 mm |
| September | 11.4 °C | 24.8 °C | 94.74 mm |
| October | 5.2 °C | 18.1 °C | 83.31 mm |
| November | 0 °C | 11.3 °C | 84.84 mm |
| December | -3.6 °C | 5.7 °C | 86.11 mm |
| Annual | 4.8 °C | 16.7 °C | 1142.24 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 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 |