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.

Rain

62°F

17°C

Humidity 39%
Wind Speed N 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 30 Dec 11:53 AM PST
Extended Forecast for

Ontario CA

Flood Watch December 31, 10:00pm until January 1, 10:00pm
Wind Advisory December 30, 12:01pm until December 30, 01:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Wind Advisory December 30, 12:01pm until December 30, 01:00pm

    NOW until 1:00pm Tue

    Wind Advisory

  • This Afternoon

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of sprinkles before 10pm, then a chance of showers after 4am. Mostly cloudy, with a low around 55. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 66. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers. The rain could be heavy at times. Low around 55. East wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 55 °F

    Heavy Rain

  • New Year's Day

    New Year's Day: Showers, mainly before 4pm. The rain could be heavy at times. High near 64. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 10pm. Partly cloudy, with a low around 53. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 73. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
A slight chance of sprinkles before 10pm, then a chance of showers after 4am. Mostly cloudy, with a low around 55. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 66. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers. The rain could be heavy at times. Low around 55. East wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
New Year's Day
Showers, mainly before 4pm. The rain could be heavy at times. High near 64. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers, mainly before 10pm. Partly cloudy, with a low around 53. Chance of precipitation is 50%.
Friday
Mostly cloudy, with a high near 64.
Friday Night
A chance of showers. Mostly cloudy, with a low around 53.
Saturday
A chance of showers. Mostly cloudy, with a high near 65.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50.
Sunday
A chance of showers. Partly sunny, with a high near 64.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47.
Monday
A slight chance of showers. Partly sunny, with a high near 66.
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:
10:54 am PST Dec 30, 2025
Forecast Valid:
12pm PST Dec 30, 2025-6pm PST Jan 5, 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