| 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: | 70b - Monongahela Transition Zone |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 15626 - Delmont, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 18 | 26 | 35 | 45 | 54 | 59 | 58 | 51 | 39 | 31 | 23 | 38 |
| Avg Max Temp (°F) | 36 | 39 | 49 | 61 | 71 | 79 | 83 | 82 | 75 | 64 | 51 | 41 | 61 |
| Avg Precip (In.) | 2.7 | 2.42 | 3.33 | 3.34 | 4.11 | 4.24 | 4.42 | 3.83 | 3.72 | 2.65 | 3.42 | 2.9 | 41.09 |