Ontario, CA Weather - Tomorrow’s Forecast

Sunday

Sunny

High:
98°F

Sunny, with a high near 98. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

Clear

Overnight low:
71°F

Clear, with a low around 71. West wind 5 to 10 mph becoming light and variable after midnight.