East McKeesport, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 16.4 °C (high). Annual precipitation averages 1056.6 Millimeters. East McKeesport 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 | -6.2 °C | 2.6 °C | 80.77 mm |
| February | -5.5 °C | 4.3 °C | 62.48 mm |
| March | -1.5 °C | 9.4 °C | 85.34 mm |
| April | 4.3 °C | 16.8 °C | 86.61 mm |
| May | 10.3 °C | 22.2 °C | 97.54 mm |
| June | 14.9 °C | 26.6 °C | 113.28 mm |
| July | 17.3 °C | 28.6 °C | 110.49 mm |
| August | 16.3 °C | 27.9 °C | 96.27 mm |
| September | 12.5 °C | 24.4 °C | 89.41 mm |
| October | 6.3 °C | 17.7 °C | 79.76 mm |
| November | 0.9 °C | 10.9 °C | 75.44 mm |
| December | -3.1 °C | 5.1 °C | 79.25 mm |
| Annual | 5.5 °C | 16.4 °C | 1056.64 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |