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

98°F

37°C

Humidity 24%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Heat Index96°F (36°C)
Last update 29 Aug 01:00 PM PDT
Extended Forecast for

2 Miles NE Rancho Cucamonga CA

Extreme Heat Warning August 29, 02:42pm until August 29, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 29, 02:42pm until August 29, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 69. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 69 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 64. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 64 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 88. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: A chance of showers after 11am. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 96. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 69. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Sunday Night
Clear, with a low around 64. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 88. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 63.
Tuesday
A chance of showers after 11am. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 64.
Wednesday
A slight chance of showers before 11am. Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Rancho Cucamonga CA
 34.15°N 117.55°W (Elev. 1798 ft)
Last Update:
12:02 pm PDT Aug 29, 2026
Forecast Valid:
2pm PDT Aug 29, 2026-6pm PDT Sep 4, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation