| | Middletown, CA | Guerneville, CA | United States |
| Rainfall | 38.6 | 41.3 | 38.1 |
| Snowfall | 1.7 | 0 | 27.8 |
| Precipitation Days | 72.2 | 74.6 | 106.2 |
| Sunny | 263 | 261 | 205 |
| Avg. July High | 89 | 85.3 | 85.8 |
| Avg. Jan. Low | 35.7 | 37.4 | 21.7 |
| Comfort Index (higher=better) | 8.1 | 8.3 | 7 |
| UV Index | 5 | 4.9 | 4.3 |
| Elevation ft. | 1099 | 59 | 2443 |