Ontario, CA Weather - Tomorrow’s Forecast

Thursday

Patchy fog

High:
81°F

Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 81. West wind 5 to 15 mph, with gusts as high as 20 mph.

Thursday Night

Mostly clear

Overnight low:
58°F

Mostly clear, with a low around 58. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.