| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70c - Pittsburgh Low Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16063 - Zelienople, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 36 | 46 | 55 | 59 | 58 | 51 | 40 | 32 | 23 | 38 |
| Avg Max Temp (°F) | 35 | 39 | 49 | 61 | 71 | 79 | 83 | 81 | 75 | 63 | 51 | 40 | 61 |
| Avg Precip (In.) | 2.61 | 2.26 | 3.1 | 3.2 | 3.91 | 4.1 | 4.05 | 3.44 | 3.44 | 2.49 | 3.15 | 2.95 | 38.71 |