Saturday
Patchy fog
High:
78°F
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Saturday Night
Clouds increasing
Overnight low:
57°F
Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Patchy fog
High:
81°F
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 81.
Sunday Night
Clouds increasing
Overnight low:
57°F
Increasing clouds, with a low around 57.
Monday
Becoming sunny
High:
82°F
Monday Night
Clouds increasing
Overnight low:
57°F
Tuesday
Becoming sunny
High:
81°F
Tuesday Night
Mostly clear
Overnight low:
58°F
Wednesday
Sunny
High:
85°F
Wednesday Night
Mostly clear
Overnight low:
60°F
Thursday
Sunny
High:
88°F