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

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

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

Partly Cloudy

48°F

9°C

Humidity 58%
Wind Speed N 0 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 28 Dec 11:53 PM PST
Extended Forecast for

Ontario CA

Wind Advisory December 29, 12:11am until December 30, 01:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 29, 12:11am until December 30, 01:00pm

    NOW until 1:00pm Tue

    Wind Advisory

  • Overnight

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71. Northeast wind around 10 mph.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. Northeast wind around 5 mph.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. The rain could be heavy at times. Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers. The rain could be heavy at times. Cloudy, with a high near 63.

    High: 63 °F

    Heavy Rain

Detailed Forecast

Overnight
Clear, with a low around 47. North wind 5 to 10 mph.
Monday
Sunny, with a high near 68. Northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 49. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly cloudy, with a high near 71. Northeast wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 55. Northeast wind around 5 mph.
Wednesday
Showers likely, mainly after 4pm. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Wednesday Night
Showers. The rain could be heavy at times. Low around 54. Chance of precipitation is 90%.
New Year's Day
Showers. The rain could be heavy at times. Cloudy, with a high near 63.
Thursday Night
Showers likely, mainly before 4am. Mostly cloudy, with a low around 55.
Friday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 65.
Friday Night
Showers likely. Mostly cloudy, with a low around 53.
Saturday
Showers likely. Mostly cloudy, with a high near 63.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50.
Sunday
A chance of showers. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
Last Update:
10:41 pm PST Dec 28, 2025
Forecast Valid:
12am PST Dec 29, 2025-6pm PST Jan 4, 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