Saturday
Sunny
High:
86°F
Sunny, with a high near 86. Light west wind increasing to 5 to 10 mph in the afternoon.
Ontario, CA Weather - Extended Forecast
Saturday Night
Mostly clear
Overnight low:
63°F
Mostly clear, with a low around 63.
Sunday
Chance of showers and thunderstorms
High:
85°F
A slight chance of showers after 11am. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Sunday Night
Chance of showers and thunderstorms
Overnight low:
65°F
A slight chance of showers. Partly cloudy, with a low around 65.
Monday
Chance of showers and thunderstorms
High:
89°F
Monday Night
Partly cloudy
Overnight low:
67°F
Tuesday
Chance of showers and thunderstorms
High:
88°F
Tuesday Night
Mostly clear
Overnight low:
65°F
Wednesday
Sunny
High:
87°F