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

58°F

14°C

Humidity 62%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Apr 01:00 AM PDT
Extended Forecast for

3 Miles ESE Rancho Cucamonga CA

  • Overnight

    Overnight: Mostly clear, with a low around 52. Southwest wind around 5 mph becoming calm.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers after 11am. Increasing clouds, 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. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 11pm. Cloudy during the early evening, then becoming partly cloudy, with a low around 50. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 52. Southwest wind around 5 mph becoming calm.
Tuesday
A slight chance of showers after 11am. Increasing clouds, 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. Chance of precipitation is 20%.
Tuesday Night
A chance of showers before 11pm. Cloudy during the early evening, then becoming partly cloudy, with a low around 50. Southwest wind 5 to 15 mph, with gusts as high as 25 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 71. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 49. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 68.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Rancho Cucamonga CA
 34.11°N 117.54°W (Elev. 1161 ft)
Last Update:
1:49 am PDT Apr 21, 2026
Forecast Valid:
2am PDT Apr 21, 2026-6pm PDT Apr 27, 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