Monday
Sunny
High:
92°F
Sunny, with a high near 92. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Ontario, CA Weather - Tomorrow’s Forecast
Monday Night
Mostly clear
Overnight low:
64°F
Mostly clear, with a low around 64. West wind 5 to 15 mph, with gusts as high as 20 mph.