Monday
Patchy fog
High:
83°F
Patchy fog before 11am. Otherwise, sunny, with a high near 83. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Monday Night
Mostly clear
Overnight low:
59°F
Mostly clear, with a low around 59.
Tuesday
Sunny
High:
84°F
Sunny, with a high near 84.
Tuesday Night
Mostly clear
Overnight low:
61°F
Mostly clear, with a low around 61.
Wednesday
Patchy fog
High:
86°F
Wednesday Night
Mostly clear
Overnight low:
61°F
Thursday
Sunny
High:
88°F
Thursday Night
Mostly clear
Overnight low:
62°F
Friday
Mostly sunny
High:
89°F