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

50°F

10°C

Humidity 80%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 23 Apr 05:00 AM PDT
Extended Forecast for

3 Miles ESE Rancho Cucamonga CA

  • Today

    Today: Sunny, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. West wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A slight chance of showers after 11am. Partly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Sunday

    Sunday: A slight chance of showers before 11am. Mostly sunny, with a high near 66. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 53. West wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 76. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
A slight chance of showers after 11am. Partly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Sunday
A slight chance of showers before 11am. Mostly sunny, with a high near 66. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Rancho Cucamonga CA
 34.11°N 117.54°W (Elev. 1161 ft)
Last Update:
5:36 am PDT Apr 23, 2026
Forecast Valid:
7am PDT Apr 23, 2026-6pm PDT Apr 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation