Average annual temperature is 12.1 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -2.0 °C
Number of sunny days: 255 days
Number of rainy days: 110 days
Look at detailed online map of Central Contra Costa
* Weather data for Central Contra Costa 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) | 16.6 | 17.4 | 17.2 | 29.4 | 29.1 | 33.4 | 37.3 | 33.9 | 29.1 | 32.4 | 23.4 | 16.4 |
| Average daytime temperature (°C) | 11.2 | 11.4 | 11.4 | 17.1 | 18.3 | 21.3 | 28.3 | 28.5 | 23.6 | 23.2 | 16.6 | 13.3 |
| Average temperature (°C) | 6.9 | 6.0 | 6.4 | 10.0 | 11.7 | 13.8 | 18.8 | 19.4 | 16.1 | 16.0 | 11.2 | 8.8 |
| Average night temperature (°C) | 3.9 | 2.0 | 2.9 | 4.9 | 7.7 | 9.1 | 12.0 | 13.4 | 11.5 | 10.9 | 7.0 | 5.6 |
| Absolute minimum temperature (°C) | -0.5 | -1.6 | -2.0 | -1.5 | 4.4 | 5.8 | 8.5 | 10.4 | 9.3 | 4.0 | 2.2 | 1.1 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 5.7 | 7.6 | 7.6 | 10.9 | 10.7 | 12.4 | 12.9 | 12.0 | 10.5 | 9.4 | 8.1 | 6.0 |
| Precipitation (mm) | 298 | 95 | 249 | 6 | 37 | 0 | 0 | 1 | 3 | 9 | 46 | 118 |
| Sunny days | 11 | 14 | 8 | 25 | 21 | 29 | 31 | 28 | 25 | 26 | 21 | 16 |
| Rainy days | 20 | 14 | 23 | 5 | 10 | 1 | 0 | 3 | 5 | 5 | 9 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Central Contra Costa during the most sunny months:
The largest precipitation sum in Central Contra Costa is at