Erie, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 13.6 °C (high). Annual precipitation averages 1080.3 Millimeters. Erie is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6 °C | 0.8 °C | 78.23 mm |
| February | -6.1 °C | 1.2 °C | 56.39 mm |
| March | -2.5 °C | 5.3 °C | 70.36 mm |
| April | 3.5 °C | 12.1 °C | 91.69 mm |
| May | 9.8 °C | 18.4 °C | 86.87 mm |
| June | 15.4 °C | 23.6 °C | 98.55 mm |
| July | 18.2 °C | 25.6 °C | 99.31 mm |
| August | 17.8 °C | 25.2 °C | 85.09 mm |
| September | 13.6 °C | 22.2 °C | 116.33 mm |
| October | 7.8 °C | 15.6 °C | 117.6 mm |
| November | 2.5 °C | 9.3 °C | 92.96 mm |
| December | -2.2 °C | 4 °C | 86.87 mm |
| Annual | 6 °C | 13.6 °C | 1080.25 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |