Ontario Airport (ONT) Weather 03/14/2025
Overnight
41
Partly Cloudy
Friday
50
Showers
Friday Night
42
Chance Showers then Mostly Cloudy
Saturday
64
Mostly Sunny
Saturday Night
44
Mostly Clear
Sunday
71
Mostly Sunny
Sunday Night
50
Mostly Cloudy
Monday
66
Slight Chance Showers
Monday Night
46
Chance Showers
Tuesday
65
Sunny
Tuesday Night
44
Clear
Wednesday
72
Sunny
Wednesday Night
46
Mostly Clear
Weekly Forecast
Overnight
Partly cloudy, with a low around 41. West wind 5 to 10 mph.
Friday
Showers. High near 50. Light and variable wind becoming northeast 5 to 10 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of showers before 11pm. Mostly cloudy, with a low around 42. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 64. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 44. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Mostly cloudy, with a low around 50.
Monday
A slight chance of showers after 11am. Partly sunny, with a high near 66.
Monday Night
A chance of showers, mainly before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Clear, with a low around 44.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 46.