Saturday
Mostly sunny
High:
63°F
Mostly sunny, with a high near 63. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Fontana, CA Weather - Extended Forecast
Saturday Night
Mostly clear
Overnight low:
45°F
Mostly clear, with a low around 45.
Sunday
Mostly sunny
High:
71°F
Mostly sunny, with a high near 71.
Sunday Night
Mostly cloudy
Overnight low:
50°F
Mostly cloudy, with a low around 50.
Monday
Chance of rain
High:
66°F
Monday Night
Chance of rain
Overnight low:
44°F
Tuesday
Chance of rain
High:
64°F
Tuesday Night
Mostly clear
Overnight low:
44°F
Wednesday
Sunny
High:
68°F