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.

Rain

57°F

14°C

Humidity 93%
Wind Speed W 6 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 13 Nov 09:15 PM PST
Extended Forecast for

Ontario CA

  • Tonight

    Tonight: Showers, mainly after 10pm. Low around 55. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming east around 5 mph.

    High: 69 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Calm wind becoming northeast around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm, mainly after 4pm. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 51. Chance of precipitation is 80%.

    Low: 51 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly before 10am. Mostly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers, mainly after 10pm. Low around 55. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming east around 5 mph.
Saturday Night
Mostly clear, with a low around 52. Calm wind becoming northeast around 5 mph.
Sunday
Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 54. Calm wind.
Monday
Showers likely and possibly a thunderstorm, mainly after 4pm. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 51. Chance of precipitation is 80%.
Tuesday
A chance of showers, mainly before 10am. Mostly sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 65.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Thursday
A chance of showers. Partly sunny, with a high near 64.
Thursday Night
A chance of showers. Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.61°W (Elev. 902 ft)
Last Update:
12:19 pm PST Nov 13, 2026
Forecast Valid:
9pm PST Nov 13, 2026-6pm PST Nov 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