National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fontana-Arrow Highway (CQ057)

Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.

NA

71°F

22°C

Humidity 42%
Wind Speed SW 7 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 16 Apr 06:00 PM PDT
Extended Forecast for

Rancho Cucamonga CA

Wind Advisory April 17, 05:00am until April 17, 05:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Patchy fog between 11pm and 2am. Otherwise, mostly cloudy during the early evening, then becoming clear, with a low around 52. West wind 5 to 10 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 52 °F

    Patchy Fog

  • Friday

    Friday: Sunny, with a high near 76. North wind 10 to 15 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 55. West wind around 5 mph becoming calm after midnight.

    Low: 55 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Southwest wind around 5 mph becoming east in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog between 11pm and 2am. Otherwise, mostly cloudy during the early evening, then becoming clear, with a low around 52. West wind 5 to 10 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Friday
Sunny, with a high near 76. North wind 10 to 15 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Clear, with a low around 55. West wind around 5 mph becoming calm after midnight.
Saturday
Sunny, with a high near 82. Southwest wind around 5 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 56. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rancho Cucamonga CA
 34.13°N 117.57°W (Elev. 1362 ft)
Last Update:
11:48 am PDT Apr 16, 2026
Forecast Valid:
7pm PDT Apr 16, 2026-6pm PDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation