| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 15644 - Jeannette, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 28 | 37 | 47 | 56 | 60 | 59 | 52 | 41 | 32 | 24 | 39 |
| Avg Max Temp (°F) | 36 | 39 | 50 | 61 | 71 | 79 | 83 | 82 | 75 | 64 | 51 | 41 | 61 |
| Avg Precip (In.) | 2.78 | 2.48 | 3.35 | 3.38 | 4.09 | 4.03 | 4.22 | 3.88 | 3.67 | 2.59 | 3.4 | 2.91 | 40.78 |