Sunday
Mostly sunny
High:
79°F
Mostly sunny, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Fontana, CA Weather - Extended Forecast
Sunday Night
Partly cloudy
Overnight low:
54°F
Partly cloudy, with a low around 54.
Monday
Partly sunny
High:
75°F
Partly sunny, with a high near 75.
Monday Night
Partly cloudy
Overnight low:
53°F
Partly cloudy, with a low around 53.
Tuesday
Sunny
High:
81°F
Tuesday Night
Clear
Overnight low:
55°F
Wednesday
Sunny
High:
84°F
Wednesday Night
Clear
Overnight low:
56°F
Thursday
Sunny
High:
83°F