Labor Day
Sunny
High:
99°F
Sunny, with a high near 99. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Ontario, CA Weather - Extended Forecast
Monday Night
Mostly clear
Overnight low:
73°F
Mostly clear, with a low around 73. Southwest wind 5 to 10 mph becoming north after midnight.
Tuesday
Chance of showers and thunderstorms
High:
99°F
A slight chance of showers after 11am. Mostly sunny, with a high near 99. Chance of precipitation is 20%.
Tuesday Night
Mostly clear
Overnight low:
73°F
Mostly clear, with a low around 73.
Wednesday
Sunny
High:
97°F
Wednesday Night
Mostly clear
Overnight low:
71°F
Thursday
Sunny
High:
95°F
Thursday Night
Mostly clear
Overnight low:
69°F
Friday
Sunny
High:
93°F
Friday Night
Mostly clear
Overnight low:
68°F
Saturday
Sunny
High:
92°F