Heavy Rainfall Along the Central Gulf Coast; Critical Fire Weather Conditions in Southern California

Heavy to excessive rainfall, and the potential for scattered flash flooding is forecast through midweek along portions of the Gulf Coast and into the Southeast. A Slight Risk (level 2 of 4) of Excessive Rainfall is in effect Monday and Tuesday. Damaging Santa Ana winds and very low humidity will result in Critical Fire Weather conditions Monday and Tuesday across Southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

ice fog

28°F

-2°C

Humidity	86%
Wind Speed	W 5 MPH
Barometer	30.38 in (1028.79 mb)
Dewpoint	25°F (-4°C)
Visibility	0.24 mi
Wind Chill	22°F (-6°C)
Last update	09 Dec 04:00 AM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Ontario Municipal OR

Air Stagnation Advisory until December 12, 02:00pm

Dense Fog Advisory December 9, 04:24am until December 9, 11:00am

Click here for hazard details and duration

Air Stagnation Advisory

Dense Fog Advisory

Air Stagnation Advisory until December 12, 02:00pm
Dense Fog Advisory December 9, 04:24am until December 9, 11:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 26 °F
Areas Dense
Fog
Monday
High: 34 °F
Areas Dense
Fog
Monday Night
Low: 24 °F
Patchy Fog
Tuesday
High: 29 °F
Patchy Fog
Tuesday Night
Low: 20 °F
Patchy Fog
Wednesday
High: 25 °F
Patchy Fog
Wednesday Night
Low: 23 °F
Patchy Fog
Thursday
High: 28 °F
Slight Chance
Snow Showers
and Patchy
Fog then
Partly Sunny

Detailed Forecast

Overnight

Areas of dense fog. Otherwise, mostly cloudy, with a low around 26. West wind around 6 mph.

Monday

Areas of dense fog. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 34. Calm wind.

Monday Night

Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 24. Calm wind.

Tuesday

Patchy fog. Otherwise, cloudy, with a high near 29. Calm wind.

Tuesday Night

Patchy fog. Otherwise, cloudy, with a low around 20. Light and variable wind.

Wednesday

Patchy fog. Otherwise, cloudy, with a high near 25.

Wednesday Night

Patchy fog. Otherwise, mostly cloudy, with a low around 23.

Thursday

A 20 percent chance of snow showers before 11am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 28.

Thursday Night

Mostly cloudy, with a low around 23.

Friday

A slight chance of snow showers before 11am, then a slight chance of rain and snow showers. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 36. Chance of precipitation is 20%.

Friday Night

A chance of rain and snow showers. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

Saturday

A chance of rain and snow showers. Patchy fog. Otherwise, cloudy, with a high near 41. Chance of precipitation is 50%.

Saturday Night

A 50 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a low around 30.

Sunday

A 40 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a high near 41.