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

87°F

31°C

Humidity 18%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Heat Index84°F (29°C)
Last update 27 Mar 01:00 PM PDT
Extended Forecast for

Fontana CA

  • Tonight

    Tonight: Increasing clouds, with a low around 60. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 83. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 76. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 76 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 56. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 11am. Mostly sunny, with a high near 75. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72. Breezy.

    High: 72 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Breezy.

    Low: 52 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 60. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Monday
Partly sunny, with a high near 83. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Partly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 76. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 56. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers before 11am. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 72. Breezy.
Thursday Night
Partly cloudy, with a low around 52. Breezy.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 81. Breezy.
Saturday Night
Clear, with a low around 55.
Sunday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fontana CA
 34.12°N 117.46°W (Elev. 1381 ft)
Last Update:
12:15 pm PDT Mar 29, 2026
Forecast Valid:
4pm PDT Mar 29, 2026-6pm PDT Apr 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation