| | Irwin, PA | Murrysville, PA | United States |
| Rainfall | 40.3 | 41.8 | 38.1 |
| Snowfall | 26.1 | 30.2 | 27.8 |
| Precipitation Days | 142 | 149.4 | 106.2 |
| Sunny | 163 | 162 | 205 |
| Avg. July High | 83.8 | 83.6 | 85.8 |
| Avg. Jan. Low | 20.4 | 20.4 | 21.7 |
| Comfort Index (higher=better) | 7 | 7 | 7 |
| UV Index | 3.5 | 3.5 | 4.3 |
| Elevation ft. | 968 | 906 | 2443 |