Monthly Historical AveragesDiamond Bar, CA
Average Temperature
High
22°
Feels 22
Low
10°
Feels 9
Average Precipitation
2 Days
6.1mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 5, 2026
Day
30°Feels 30
Wind
20 km/h E
Gust
30 km/h
Humidity
9%
P.O.P
20%
Night
16°Feels 16
Wind
19 km/h SW
Gust
28 km/h
Humidity
61%
P.O.P
30%
Historical AveragesApr 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity