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

59°F

15°C

Humidity 47%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 11 Nov 04:00 AM PST
Extended Forecast for

4 Miles S Rialto CA

  • Veterans Day

    Veterans Day: Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Calm wind becoming northeast around 5 mph.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 10pm. Partly cloudy, with a low around 59. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 4pm. Partly sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before 10am. Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Veterans Day
Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 59. Calm wind becoming northeast around 5 mph.
Thursday
Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
A chance of showers after 10pm. Partly cloudy, with a low around 59. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly after 4pm. Partly sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers. Low around 57. Chance of precipitation is 80%.
Saturday
Showers likely, mainly before 10am. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Sunny, with a high near 68.
Sunday Night
A chance of showers after 4am. Partly cloudy, with a low around 53.
Monday
Showers likely. Mostly cloudy, with a high near 66.
Monday Night
Showers likely. Mostly cloudy, with a low around 51.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Rialto CA
 34.06°N 117.39°W (Elev. 1056 ft)
Last Update:
12:13 am PST Nov 11, 2026
Forecast Valid:
5am PST Nov 11, 2026-6pm PST Nov 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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