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.

Mostly Cloudy

46°F

8°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 19 Feb 12:20 AM PST
Extended Forecast for

Ontario CA

Wind Advisory February 19, 09:00am until February 20, 02:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: A chance of showers after 4am. Mostly cloudy, with a low around 39. 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: 39 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly between 10am and 4pm. The rain could be heavy at times. High near 54. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: A chance of showers before 10pm. Partly cloudy, with a low around 37. West wind 10 to 15 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind around 5 mph becoming calm.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers after 4am. Mostly cloudy, with a low around 39. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers, mainly between 10am and 4pm. The rain could be heavy at times. High near 54. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers before 10pm. Partly cloudy, with a low around 37. West wind 10 to 15 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 57. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 38. South wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 73.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 53.
Tuesday
A slight chance of showers. Partly sunny, with a high near 71.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 54.
Wednesday
A chance of showers. Partly sunny, with a high near 69.
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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:
12:18 pm PST Feb 18, 2026
Forecast Valid:
12am PST Feb 19, 2026-6pm PST Feb 25, 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