Sunday
Sunny
High:
70°F
Sunny, with a high near 70. Calm wind becoming west around 5 mph in the morning.
Ontario, CA Weather - Extended Forecast
Sunday Night
Mostly clear
Overnight low:
47°F
Mostly clear, with a low around 47. West wind around 5 mph.
Monday
Sunny
High:
73°F
Sunny, with a high near 73.
Monday Night
Clear
Overnight low:
49°F
Clear, with a low around 49.
Tuesday
Sunny
High:
75°F
Tuesday Night
Clear
Overnight low:
52°F
Wednesday
Sunny
High:
79°F
Wednesday Night
Clear
Overnight low:
53°F
Thursday
Sunny
High:
78°F
Thursday Night
Mostly clear
Overnight low:
52°F
Friday
Sunny
High:
75°F