| | Hayward, CA | Johns Creek, GA | United States |
| Rainfall | 18 | 53.7 | 38.1 |
| Snowfall | 0 | 1.4 | 27.8 |
| Precipitation Days | 64.7 | 107.5 | 106.2 |
| Sunny | 257 | 217 | 205 |
| Avg. July High | 76.2 | 87.9 | 85.8 |
| Avg. Jan. Low | 42.1 | 30 | 21.7 |
| Comfort Index (higher=better) | 8.7 | 7.5 | 7 |
| UV Index | 5.4 | 5.1 | 4.3 |
| Elevation ft. | 105 | 928 | 2443 |