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

Fontana-Arrow Highway (CQ057)

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

NA

61°F

16°C

Humidity 94%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 59°F (15°C)
Visibility NA
Last update 25 Jun 06:00 AM PDT
Extended Forecast for

Rancho Cucamonga CA

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 84. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy drizzle and fog before 11am. Mostly sunny, with a high near 77. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 77 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 75.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 84. Light and variable 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 59. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 59. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Patchy drizzle and fog before 11am. Mostly sunny, with a high near 77. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Clear, with a low around 56.
Wednesday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Rancho Cucamonga CA
 34.13°N 117.57°W (Elev. 1362 ft)
Last Update:
12:17 am PDT Jun 25, 2026
Forecast Valid:
7am PDT Jun 25, 2026-6pm PDT Jul 1, 2026
 
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