National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Clear

61°F

16°C

Humidity 63%
Wind Speed N 0 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 19 Apr 03:35 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Overnight

    Overnight: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers after 11am. Increasing clouds, with a high near 73. Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. Calm wind.
Sunday
Sunny, with a high near 83. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 53. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 51. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
A slight chance of showers after 11am. Increasing clouds, with a high near 73. Chance of precipitation is 20%.
Tuesday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
1:07 am PDT Apr 19, 2026
Forecast Valid:
3am PDT Apr 19, 2026-6pm PDT Apr 25, 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