| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16509 - Erie, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 19 | 27 | 37 | 48 | 57 | 63 | 62 | 55 | 44 | 35 | 25 | 41 |
| Avg Max Temp (°F) | 33 | 35 | 45 | 56 | 68 | 76 | 80 | 78 | 72 | 61 | 48 | 38 | 57 |
| Avg Precip (In.) | 2.65 | 2.36 | 3.14 | 3.45 | 3.48 | 4.38 | 3.71 | 4.27 | 4.79 | 4.09 | 4.09 | 3.68 | 44.08 |