Monthly Historical AveragesGrossmont, CA
Average Temperature
High
20°
Feels 20
Low
8°
Feels 7
Average Precipitation
4 Days
22.6mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, January 6, 2026
Day
17°Feels 17
Wind
5 km/h SW
Gust
8 km/h
Humidity
65%
P.O.P
30%
Night
10°Feels 10
Wind
7 km/h E
Gust
10 km/h
Humidity
90%
P.O.P
90%
Rain
1-3 mm
Historical AveragesJan 6
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity