Monthly Historical AveragesFullerton, CA
Average Temperature
High
22°
Feels 22
Low
10°
Feels 10
Average Precipitation
3 Days
16.3mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, March 7, 2026
Day
25°Feels 25
Wind
25 km/h NE
Gust
38 km/h
Humidity
9%
P.O.P
0%
Night
14°Feels 14
Wind
13 km/h S
Gust
19 km/h
Humidity
23%
P.O.P
0%
Historical AveragesMar 7
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity