Monthly Historical AveragesPort Costa, CA
Average Temperature
High
20°
Feels 19
Low
9°
Feels 7
Average Precipitation
5 Days
33.6mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 12, 2026
Day
15°Feels 14
Wind
19 km/h S
Gust
29 km/h
Humidity
58%
P.O.P
90%
Rain
2-4 mm
Night
8°Feels 8
Wind
15 km/h SW
Gust
22 km/h
Humidity
97%
P.O.P
40%
Rain
<1 mm
Historical AveragesApr 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity