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

65°F

18°C

Humidity 15%
Wind Speed NNE 17 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 29 Dec 12:00 PM PST
Extended Forecast for

Rancho Cucamonga CA

Wind Advisory December 29, 01:55pm until December 30, 01:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 29, 01:55pm until December 30, 01:00pm

    NOW until 1:00pm Tue

    Wind Advisory

  • This Afternoon

    High: 65 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 50. North wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 71. North wind 5 to 10 mph becoming light northeast. Winds could gust as high as 20 mph.

    High: 71 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly after 4am. Mostly cloudy, with a low around 55. North wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 65 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. The rain could be heavy at times. Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers. The rain could be heavy at times. High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 65. Breezy, with a north wind around 25 mph, with gusts as high as 40 mph.
Tonight
Partly cloudy, with a low around 50. North wind 15 to 20 mph, with gusts as high as 35 mph.
Tuesday
Partly sunny, with a high near 71. North wind 5 to 10 mph becoming light northeast. Winds could gust as high as 20 mph.
Tuesday Night
A chance of showers, mainly after 4am. Mostly cloudy, with a low around 55. North wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers. The rain could be heavy at times. Low around 53. Chance of precipitation is 90%.
New Year's Day
Showers. The rain could be heavy at times. High near 62. Chance of precipitation is 90%.
Thursday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 53.
Friday
A chance of showers. Partly sunny, with a high near 64.
Friday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 52.
Saturday
Showers likely. Mostly cloudy, with a high near 63.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49.
Sunday
A chance of showers. Partly sunny, with a high near 61.
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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:
12:55 pm PST Dec 29, 2025
Forecast Valid:
1pm PST Dec 29, 2025-6pm PST Jan 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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