National Weather Service

News Headlines

Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Clear

64°F

18°C

Humidity	59%
Wind Speed	WSW 5 MPH
Barometer	30.04 in (1017.27 mb)
Dewpoint	50°F (10°C)
Visibility	9.00 mi
Last update	04 Mar 10:05 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Rancho Cucamonga CA

Today
High: 75 °F
Sunny
Tonight
Low: 49 °F
Mostly Clear
then Patchy
Fog
Thursday
High: 72 °F
Patchy Fog
then Sunny
Thursday Night
Low: 49 °F
Clear
Friday
High: 71 °F
Sunny
Friday Night
Low: 52 °F
Mostly Clear
Saturday
High: 73 °F
Patchy
Blowing Dust
and Breezy
Saturday Night
Low: 55 °F
Mostly Clear
then Patchy
Blowing Dust
Sunday
High: 77 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 75. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

Tonight

Patchy fog after 4am. Otherwise, mostly clear, with a low around 49. Southwest wind 5 to 10 mph.

Thursday

Patchy fog before 7am. Otherwise, sunny, with a high near 72. West wind 10 to 20 mph becoming northeast in the afternoon. Winds could gust as high as 30 mph.

Thursday Night

Clear, with a low around 49. North wind 10 to 15 mph, with gusts as high as 25 mph.

Friday

Sunny, with a high near 71. Northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

Friday Night

Mostly clear, with a low around 52.

Saturday

Patchy blowing dust. Sunny, with a high near 73. Breezy.

Saturday Night

Patchy blowing dust after 1am. Mostly clear, with a low around 55.

Sunday

Sunny, with a high near 77.