Friday
Sunny
High:
94°F
Sunny, with a high near 94. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Ontario, CA Weather - Extended Forecast
Friday Night
Mostly clear
Overnight low:
66°F
Mostly clear, with a low around 66.
Saturday
Mostly sunny
High:
84°F
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy
Overnight low:
63°F
Partly cloudy, with a low around 63.
Sunday
Chance of showers
High:
77°F
Sunday Night
Chance of showers
Overnight low:
56°F
Columbus Day
Chance of showers
High:
71°F
Monday Night
Chance of showers
Overnight low:
53°F
Tuesday
Sunny
High:
75°F