Average annual temperature is 12.1 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -5.3 °C
Number of sunny days: 232 days
Number of rainy days: 133 days
Look at detailed online map of Mendocino County
* Weather data for Mendocino County United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.0 | 19.3 | 16.7 | 27.5 | 30.3 | 33.1 | 35.3 | 35.1 | 30.8 | 31.5 | 22.4 | 19.6 |
| Average daytime temperature (°C) | 12.1 | 11.9 | 9.9 | 15.7 | 19.4 | 22.8 | 27.6 | 28.2 | 23.4 | 22.3 | 16.8 | 14.1 |
| Average temperature (°C) | 6.5 | 5.3 | 5.0 | 9.0 | 12.8 | 15.4 | 19.5 | 20.4 | 16.3 | 14.4 | 10.8 | 9.4 |
| Average night temperature (°C) | 2.6 | 0.9 | 1.1 | 4.0 | 8.0 | 9.6 | 12.1 | 14.0 | 11.1 | 8.9 | 6.4 | 6.2 |
| Absolute minimum temperature (°C) | -3.5 | -3.2 | -5.3 | -2.5 | 3.4 | 4.5 | 8.1 | 9.0 | 8.0 | 0.4 | -0.5 | 0.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 7.0 | 6.8 | 10.1 | 11.8 | 12.9 | 13.5 | 12.0 | 10.5 | 8.5 | 7.0 | 5.0 |
| Precipitation (mm) | 438 | 176 | 317 | 31 | 52 | 1 | 0 | 2 | 19 | 48 | 123 | 268 |
| Sunny days | 12 | 14 | 6 | 20 | 21 | 28 | 31 | 27 | 22 | 19 | 17 | 15 |
| Rainy days | 19 | 14 | 25 | 10 | 10 | 2 | 0 | 4 | 8 | 12 | 13 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mendocino County during the most sunny months:
The largest precipitation sum in Mendocino County is at