Average annual temperature is 18.1 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: -5.4 °C
Number of sunny days: 296 days
Number of rainy days: 67 days
Number of snow days: 2 days
Look at detailed online map of Sierra County
* Weather data for Sierra 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) | 19.9 | 21.5 | 25.5 | 31.7 | 33.0 | 40.5 | 41.0 | 40.6 | 37.5 | 31.0 | 28.5 | 21.2 |
| Average daytime temperature (°C) | 13.0 | 14.9 | 19.4 | 25.4 | 29.3 | 34.4 | 38.6 | 34.7 | 32.7 | 27.2 | 18.5 | 13.7 |
| Average temperature (°C) | 6.3 | 7.4 | 12.2 | 17.6 | 22.4 | 27.4 | 32.3 | 28.2 | 25.3 | 19.6 | 11.4 | 6.6 |
| Average night temperature (°C) | 0.8 | 1.6 | 5.4 | 9.3 | 14.6 | 19.1 | 24.4 | 21.2 | 17.5 | 11.7 | 5.0 | 0.5 |
| Absolute minimum temperature (°C) | -4.0 | -5.4 | -0.6 | -1.6 | 9.6 | 14.4 | 21.5 | 16.9 | 12.5 | -0.3 | -2.1 | -3.9 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 8.3 | 9.0 | 10.0 | 11.9 | 12.2 | 12.8 | 12.6 | 11.6 | 10.7 | 10.2 | 8.7 | 8.2 |
| Precipitation (mm) | 7 | 4 | 13 | 0 | 27 | 1 | 0 | 13 | 8 | 3 | 9 | 14 |
| Sunny days | 24 | 21 | 24 | 28 | 21 | 27 | 28 | 19 | 24 | 27 | 26 | 27 |
| Rainy days | 6 | 6 | 7 | 2 | 10 | 3 | 3 | 12 | 6 | 4 | 4 | 4 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sierra County is at