Wednesday
Mostly sunny
High:
71°F
Mostly sunny, with a high near 71. West wind 5 to 15 mph, with gusts as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Wednesday Night
Mostly clear
Overnight low:
50°F
Mostly clear, with a low around 50.
Thursday
Sunny
High:
76°F
Sunny, with a high near 76.
Thursday Night
Partly cloudy
Overnight low:
53°F
Partly cloudy, with a low around 53.
Friday
Mostly sunny
High:
75°F
Friday Night
Partly cloudy
Overnight low:
54°F
Saturday
Chance of showers and thunderstorms
High:
68°F
Saturday Night
Mostly cloudy
Overnight low:
52°F
Sunday
Partly sunny
High:
69°F