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.

Clear

49°F

9°C

Humidity 83%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 27 Dec 10:53 PM PST
Extended Forecast for

Ontario CA

High Wind Watch December 28, 10:00pm until December 30, 01:00pm
Click here for hazard details and duration
High Wind Watch

  • Tonight

    Tonight: Mostly clear, with a low around 42. West wind around 5 mph becoming calm.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. Southwest wind around 5 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. West wind around 5 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 4am. Partly cloudy, with a low around 49. Chance of precipitation is 10%.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 10am. Partly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 10pm. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 42. West wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 64. Southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 45. West wind around 5 mph.
Monday
Sunny, with a high near 65. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 46. East wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 70.
Tuesday Night
A slight chance of showers after 4am. Partly cloudy, with a low around 49. Chance of precipitation is 10%.
Wednesday
A chance of showers, mainly after 10am. Partly sunny, with a high near 69.
Wednesday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 53.
New Year's Day
Showers likely. Mostly cloudy, with a high near 66.
Thursday Night
Showers likely. Mostly cloudy, with a low around 52.
Friday
Showers likely. Mostly cloudy, with a high near 65.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50.
Saturday
A chance of showers. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.64°W (Elev. 919 ft)
Last Update:
1:15 pm PST Dec 27, 2025
Forecast Valid:
11pm PST Dec 27, 2025-6pm PST Jan 3, 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