Ontario Airport (ONT) Weather 06/10/2025
Today
90
Patchy Fog then Sunny
Tonight
63
Increasing Clouds
Wednesday
90
Patchy Fog then Sunny
Wednesday Night
63
Increasing Clouds
Thursday
89
Patchy Fog then Sunny
Thursday Night
64
Patchy Fog
Friday
89
Patchy Fog then Sunny
Friday Night
63
Mostly Clear
Saturday
93
Patchy Fog then Mostly Sunny
Saturday Night
65
Mostly Clear
Sunday
95
Sunny
Sunday Night
66
Mostly Clear
Monday
93
Sunny
Weekly Forecast
Today
Patchy fog before 8am. Otherwise, sunny, with a high near 90. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Increasing clouds, with a low around 63. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Wednesday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 90. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Increasing clouds, with a low around 63. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Light south wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 64.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 63.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 93.