Saturday
Sunny
High:
76°F
Sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.
Ontario, CA Weather - Extended Forecast
Saturday Night
Clear
Overnight low:
56°F
Clear, with a low around 56.
Sunday
Sunny
High:
79°F
Sunny, with a high near 79.
Sunday Night
Mostly clear
Overnight low:
58°F
Mostly clear, with a low around 58.
Monday
Sunny
High:
80°F
Monday Night
Mostly clear
Overnight low:
58°F
Tuesday
Sunny
High:
79°F
Tuesday Night
Partly cloudy
Overnight low:
58°F
Wednesday
Mostly sunny
High:
78°F