Sunday
Patchy drizzle
High:
66°F
Patchy drizzle before 11am. Partly sunny, with a high near 66. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Sunday Night
Chance of showers and thunderstorms
Overnight low:
52°F
A slight chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 20%.
Monday
Mostly cloudy
High:
66°F
Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy
Overnight low:
50°F
Mostly cloudy, with a low around 50.
Tuesday
Partly sunny
High:
69°F
Tuesday Night
Partly cloudy
Overnight low:
47°F
Wednesday
Chance of showers and thunderstorms
High:
67°F
Wednesday Night
Chance of showers and thunderstorms
Overnight low:
48°F
Thursday
Chance of showers and thunderstorms
High:
64°F