Monthly Historical AveragesOntario, CA
Average Temperature
High
23°
Feels 23
Low
9°
Feels 8
Average Precipitation
3 Days
18mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, March 21, 2026
Day
33°Feels 33
Wind
20 km/h W
Gust
30 km/h
Humidity
17%
P.O.P
20%
Night
18°Feels 18
Wind
15 km/h W
Gust
23 km/h
Humidity
55%
P.O.P
20%
Historical AveragesMar 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity