Monthly Historical AveragesOntario, CA
Average Temperature
High
26°
Feels 26
Low
13°
Feels 13
Average Precipitation
1 Days
5.1mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastFriday, May 8, 2026
Day
29°Feels 29
Wind
19 km/h SW
Gust
29 km/h
Humidity
33%
P.O.P
20%
Night
15°Feels 15
Wind
15 km/h W
Gust
23 km/h
Humidity
73%
P.O.P
0%
Historical AveragesMay 8
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity