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.

Partly Cloudy

61°F

16°C

Humidity 41%
Wind Speed NNE 23 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 22 Nov 12:05 AM PST
Extended Forecast for

Ontario CA

  • Overnight

    Overnight: A slight chance of showers. Mostly cloudy, with a low around 51. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm after midnight.

    Low: 47 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, sunny, with a high near 68. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. Calm wind becoming northeast around 5 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 51. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 68. Northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm after midnight.
Sunday
Patchy fog before 10am. Otherwise, sunny, with a high near 68. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 47. Calm wind becoming northeast around 5 mph.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 51.
Thanksgiving Day
Mostly sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 51.
Friday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
Last Update:
1:22 pm PST Nov 21, 2025
Forecast Valid:
12am PST Nov 22, 2025-6pm PST Nov 28, 2025
 
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