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

55°F

13°C

Humidity 77%
Wind Speed WSW 4 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 Apr 02:53 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Overnight

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

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers after 11am. Increasing clouds, with a high near 73. Light southwest wind increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 73 °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. West wind 10 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 50. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 50 °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.
Tuesday
A slight chance of showers after 11am. Increasing clouds, with a high near 73. Light southwest wind increasing to 15 to 20 mph in the afternoon. 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. West wind 10 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 50. 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 69.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
1:49 am PDT Apr 21, 2026
Forecast Valid:
3am PDT Apr 21, 2026-6pm PDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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