Thursday
Sunny
High:
85°F
Sunny, with a high near 85. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Thursday Night
Mostly clear
Overnight low:
61°F
Mostly clear, with a low around 61. West wind 10 to 15 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Independence Day
Sunny
High:
87°F
Sunny, with a high near 87.
Friday Night
Mostly clear
Overnight low:
62°F
Mostly clear, with a low around 62.
Saturday
Sunny
High:
90°F
Saturday Night
Mostly clear
Overnight low:
62°F
Sunday
Sunny
High:
92°F
Sunday Night
Mostly clear
Overnight low:
63°F
Monday
Sunny
High:
92°F
Monday Night
Mostly clear
Overnight low:
65°F
Tuesday
Sunny
High:
94°F