Current conditions at

Fontana-Arrow Highway (CQ057)

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

NA

90°F

32°C

Humidity 11%
Wind Speed NNE 13 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Heat Index86°F (30°C)
Last update 16 Mar 01:00 PM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

Heat Advisory until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. North wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 99. Light and variable wind becoming north 5 to 10 mph in the afternoon.

    High: 99 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66. West wind 5 to 10 mph becoming light and variable.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 67.

    Low: 67 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 99.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 67.

    Low: 67 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 94. Northeast wind around 15 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 65. North wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 99. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Tuesday Night
Clear, with a low around 66. West wind 5 to 10 mph becoming light and variable.
Wednesday
Sunny, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Clear, with a low around 67.
Thursday
Sunny, with a high near 99.
Thursday Night
Clear, with a low around 67.
Friday
Sunny, with a high near 99.
Friday Night
Clear, with a low around 65.
Saturday
Sunny, with a high near 94.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 88.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
11:05 am PDT Mar 16, 2026
2pm PDT Mar 16, 2026-6pm PDT Mar 22, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database