Sunday
Sunny
High:
86°F
Sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Sunday Night
Clear
Overnight low:
60°F
Clear, with a low around 60. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Monday
Sunny
High:
87°F
Sunny, with a high near 87.
Monday Night
Mostly clear
Overnight low:
60°F
Mostly clear, with a low around 60.
Tuesday
Sunny
High:
89°F
Tuesday Night
Clear
Overnight low:
62°F
Wednesday
Sunny
High:
92°F
Wednesday Night
Mostly clear
Overnight low:
65°F
Thursday
Mostly sunny
High:
93°F
Thursday Night
Mostly clear
Overnight low:
68°F
Friday
Sunny
High:
96°F