Monthly Historical AveragesRialto, CA
Average Temperature
High
27°
Feels 27
Low
13°
Feels 12
Average Precipitation
1 Days
4.4mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 17, 2026
Day
23°Feels 23
Wind
17 km/h SW
Gust
25 km/h
Humidity
39%
P.O.P
30%
Night
13°Feels 13
Wind
16 km/h SW
Gust
25 km/h
Humidity
75%
P.O.P
10%
Historical AveragesMay 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity