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

61°F

16°C

Humidity 88%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Last update 31 Mar 01:00 AM PDT
Extended Forecast for

Fontana CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 73. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Patchy Fog
    then Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Light southwest wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 53. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 71.

    High: 71 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78. Windy.

    High: 78 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Calm wind.
Tuesday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 73. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 72. Light southwest wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Wednesday Night
Increasing clouds, with a low around 53. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 78. Windy.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 84. Breezy.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly 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:
12:19 am PDT Mar 31, 2026
Forecast Valid:
2am PDT Mar 31, 2026-6pm PDT Apr 6, 2026
 
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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