Average annual temperature is 16.1 °C
Absolute maximum temperature: 43.4 °C
Absolute minimum temperature: 0.3 °C
Number of sunny days: 263 days
Number of rainy days: 102 days
Look at detailed online map of East Contra Costa
* Weather data for East 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) | 17.9 | 18.6 | 19.5 | 31.6 | 33.1 | 39.8 | 43.4 | 40.8 | 34.9 | 34.3 | 27.1 | 19.0 |
| Average daytime temperature (°C) | 13.7 | 14.0 | 15.1 | 22.0 | 24.8 | 29.2 | 36.5 | 35.7 | 30.1 | 26.9 | 19.7 | 15.8 |
| Average temperature (°C) | 9.1 | 8.1 | 9.7 | 14.3 | 16.9 | 19.8 | 25.1 | 25.4 | 21.1 | 18.9 | 13.3 | 10.6 |
| Average night temperature (°C) | 5.9 | 3.9 | 5.9 | 8.9 | 11.4 | 13.4 | 16.3 | 17.8 | 14.6 | 12.9 | 8.4 | 6.8 |
| Absolute minimum temperature (°C) | 1.8 | 0.3 | 1.4 | 3.0 | 7.2 | 11.2 | 12.4 | 14.4 | 12.0 | 6.2 | 3.4 | 3.5 |
| 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 | 10.1 | 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 | 7.7 | 7.8 | 11.5 | 11.5 | 13.3 | 13.4 | 12.3 | 10.9 | 9.6 | 8.2 | 6.4 |
| Precipitation (mm) | 214 | 81 | 192 | 3 | 23 | 0 | 0 | 9 | 2 | 6 | 42 | 108 |
| Sunny days | 11 | 15 | 10 | 28 | 21 | 29 | 31 | 27 | 26 | 26 | 23 | 16 |
| Rainy days | 20 | 13 | 21 | 2 | 10 | 1 | 0 | 4 | 4 | 5 | 7 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit East Contra Costa during the most sunny months:
The largest precipitation sum in East Contra Costa is at