Ontario Weather Forecast for Tomorrow

Sunday

Cloudy periods

Cloudy periods

High:
69°F
(21°C)

Cloudy, then gradually becoming mostly sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

Partly cloudy

Partly cloudy

Low:
51°F
(11°C)

Partly cloudy, with a low around 51. West wind 5 to 15 mph, with gusts as high as 20 mph.