Ontario, CA Weather

Overnight
Clear, with a low around 66. Northwest wind 0 to 5 mph.

Tuesday
Sunny, with a high near 97. Southwest wind 0 to 15 mph, with gusts as high as 25 mph.

Tuesday Night
Mostly clear, with a low around 69. West wind 0 to 15 mph, with gusts as high as 25 mph.

Wednesday
Sunny, with a high near 101. Southwest wind 0 to 15 mph, with gusts as high as 25 mph.

Wednesday Night
Mostly clear, with a low around 71. West wind 0 to 15 mph, with gusts as high as 25 mph.

Thursday
Sunny, with a high near 99.

Thursday Night
Mostly clear, with a low around 66.

Friday
Sunny, with a high near 91.

Friday Night
Mostly clear, with a low around 65.

Saturday
Mostly sunny, with a high near 91.

Saturday Night
Mostly clear, with a low around 65.

Sunday
Sunny, with a high near 92.

Sunday Night
Mostly clear, with a low around 66.

Monday
Sunny, with a high near 91.