Monthly Historical AveragesSan Marcos, CA
Average Temperature
High
23°
Feels 24
Low
15°
Feels 14
Average Precipitation
1 Days
0.6mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, June 24, 2026
Day
21°Feels 21
Wind
16 km/h W
Gust
24 km/h
Humidity
60%
P.O.P
30%
Night
17°Feels 17
Wind
10 km/h W
Gust
16 km/h
Humidity
96%
P.O.P
30%
Historical AveragesJun 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity