Thursday
Sunny
High:
99°F
Sunny, with a high near 99. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Fontana, CA Weather - Extended Forecast
Thursday Night
Mostly clear
Overnight low:
72°F
Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny
High:
95°F
Sunny, with a high near 95.
Friday Night
Mostly clear
Overnight low:
67°F
Mostly clear, with a low around 67.
Saturday
Patchy fog
High:
86°F
Saturday Night
Partly cloudy
Overnight low:
62°F
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
Chance of showers and thunderstorms
High:
74°F