Monthly Historical AveragesSan Mateo, CA
Average Temperature
High
13°
Feels 13
Low
7°
Feels 5
Average Precipitation
9 Days
78.2mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, December 24, 2025
Day
15°Feels 15
Wind
19 km/h S
Gust
28 km/h
Humidity
68%
P.O.P
40%
Rain
~1 mm
Night
12°Feels 10
Wind
42 km/h SE
Gust
63 km/h
Humidity
88%
P.O.P
100%
Rain
~10 mm
Historical AveragesDec 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity