Ontario Airport (ONT) Weather 08/11/2025
Today
94
Sunny
Tonight
66
Mostly Clear
Tuesday
93
Sunny
Tuesday Night
66
Mostly Clear
Wednesday
93
Sunny
Wednesday Night
66
Mostly Clear
Thursday
93
Patchy Fog then Sunny
Thursday Night
63
Mostly Clear
Friday
89
Sunny
Friday Night
62
Clear
Saturday
88
Sunny
Saturday Night
62
Clear
Sunday
90
Sunny
Weekly Forecast
Today
Sunny, with a high near 94. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 66. West wind 5 to 10 mph.
Tuesday
Sunny, with a high near 93. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 66. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 93. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Patchy fog before 11am. Otherwise, sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 89.
Friday Night
Clear, with a low around 62.
Saturday
Sunny, with a high near 88.
Saturday Night
Clear, with a low around 62.
Sunday
Sunny, with a high near 90.