Hazardous Weather Conditions
Current conditions at
Ontario International Airport (KONT)
Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.
Clear
59°F
15°C
| Humidity | 44% |
| Wind Speed | N 0 MPH |
| Barometer | 30.07 in (1018.29 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 31 Dec 04:05 AM PST |
Extended Forecast for
Ontario International Arpt CA
Flood Watch December 31, 10:00pm until January 1, 10:00pm
Overnight
Low: 55 °F
Chance
ShowersWednesday
High: 66 °F
Showers
Wednesday Night
Low: 53 °F
Heavy Rain
New Year's Day
High: 63 °F
Heavy Rain
Thursday Night
Low: 52 °F
Chance
ShowersFriday
High: 64 °F
Mostly Cloudy
then Slight
Chance
ShowersFriday Night
Low: 52 °F
Chance
ShowersSaturday
High: 63 °F
Chance
ShowersSaturday Night
Low: 51 °F
Showers
Likely
Detailed Forecast
Overnight
A chance of showers. Cloudy, with a low around 55. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers, mainly after 10am. High near 66. Northeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers, with thunderstorms also possible after 10pm. Some of the storms could produce heavy rainfall. Low around 53. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
New Year's Day
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. High near 63. East wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 52. South wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of showers after 4pm. Partly sunny, with a high near 64. Chance of precipitation is 10%.
Friday Night
A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 63.
Saturday Night
Showers likely. Mostly cloudy, with a low around 51.
Sunday
Showers likely. Mostly cloudy, with a high near 63.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49.
Monday
A chance of showers. Mostly cloudy, with a high near 62.
Monday Night
A chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Ontario International Arpt CA
34.06°N 117.58°W (Elev. 906 ft)
34.06°N 117.58°W (Elev. 906 ft)
12:07 am PST Dec 31, 2025
4am PST Dec 31, 2025-6pm PST Jan 6, 2026
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