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

54°F

12°C

Humidity 99%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 17 Nov 01:00 AM PST
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Overnight

    Overnight: A slight chance of showers before 4am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    Showers

  • Monday

    Monday: Showers, mainly after 4pm. The rain could be heavy at times. High near 62. East wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Chance
    Showers then
    Heavy Rain

  • Monday Night

    Monday Night: Showers. The rain could be heavy at times. Low around 46. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Heavy Rain
    then Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 58. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 10pm. Partly cloudy, with a low around 43. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 10am. Partly sunny, with a high near 59.

    High: 59 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers before 4am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 20%.
Monday
Showers, mainly after 4pm. The rain could be heavy at times. High near 62. East wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers. The rain could be heavy at times. Low around 46. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A slight chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 58. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers before 10pm. Partly cloudy, with a low around 43. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
A slight chance of showers after 10am. Partly sunny, with a high near 59.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 47.
Friday
A chance of showers, mainly before 4pm. Partly sunny, with a high near 62.
Friday Night
A slight chance of showers. Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
1:24 am PST Nov 17, 2025
Forecast Valid:
2am PST Nov 17, 2025-6pm PST Nov 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation