Monthly Historical AveragesFullerton, CA
Average Temperature
High
26°
Feels 27
Low
16°
Feels 16
Average Precipitation
0 Days
0.1mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, June 10, 2026
Day
27°Feels 27
Wind
14 km/h SW
Gust
20 km/h
Humidity
40%
P.O.P
0%
Night
18°Feels 19
Wind
12 km/h SW
Gust
18 km/h
Humidity
89%
P.O.P
10%
Historical AveragesJun 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity