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.

Fog

49°F

9°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 47°F (8°C)
Visibility 0.50 mi
Last update 14 Feb 07:53 AM PST
Extended Forecast for

Ontario CA

  • Today

    Today: Mostly sunny, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. West wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain, mainly after 4am. Mostly cloudy, with a low around 48. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance Rain

  • Washington's Birthday

    Washington's Birthday: Rain, mainly after 10am. High near 57. Breezy, with a southeast wind 5 to 10 mph becoming west 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 46. Chance of precipitation is 100%.

    Low: 46 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Cloudy, with a low around 45.

    Low: 45 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 4pm. Mostly cloudy, with a high near 56.

    High: 56 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 46. West wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 66. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunday Night
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 48. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Washington's Birthday
Rain, mainly after 10am. High near 57. Breezy, with a southeast wind 5 to 10 mph becoming west 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 46. Chance of precipitation is 100%.
Tuesday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Tuesday Night
Showers. Cloudy, with a low around 45.
Wednesday
Showers likely, mainly before 4pm. Mostly cloudy, with a high near 56.
Wednesday Night
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 41.
Thursday
A slight chance of showers. Mostly sunny, with a high near 60.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Friday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
Last Update:
1:09 am PST Feb 14, 2026
Forecast Valid:
8am PST Feb 14, 2026-6pm PST Feb 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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