Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain Returns to California

Lake effect snow will continue through Friday bringing significant snowfall to areas east to southeast of the Great Lakes. Snow squalls may impact New Year's Eve travel this evening and overnight across parts of the Great Lakes, Ohio Valley, Mid-Atlantic, and Upstate New York. Heavy rain will bring another flash flooding threat for southern California New Year's Eve into New Year's Day. Read More >

Hazardous Weather Conditions

Air Stagnation Advisory until December 31, 04:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

35°F

2°C

Humidity	99%
Wind Speed	NE 0 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Last update	31 Dec 10:52 AM PST

More Information:

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

Extended Forecast for

16 Miles SE Agness OR

Air Stagnation Advisory December 31, 11:26am until December 31, 04:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory December 31, 11:26am until December 31, 04:00pm
NOW until 4:00pm Wed
Air Stagnation Advisory
Today
High: 51 °F
Slight Chance
Rain
Tonight
Low: 44 °F
Chance Rain
then Rain
Likely
New Year's Day
High: 49 °F
Rain
Thursday Night
Low: 47 °F
Rain
Friday
High: 51 °F
Rain Likely
Friday Night
Low: 43 °F
Rain
Saturday
High: 44 °F
Rain
Saturday Night
Low: 41 °F
Rain

Detailed Forecast

Today

A 20 percent chance of rain after 3pm. Partly sunny, with a high near 51. South southeast wind around 7 mph.

Tonight

Rain likely, mainly after 2am. Cloudy, with a low around 44. West southwest wind around 6 mph becoming east southeast in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

New Year's Day

Rain. High near 49. Southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain, mainly before 4am. Low around 47. South wind around 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Rain likely, mainly after 10am. Mostly cloudy, with a high near 51. South southeast wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Rain. Low around 43. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday

Rain. Snow level 5000 feet. High near 44. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday Night

Rain. Snow level 4600 feet. Cloudy, with a low around 41.

Sunday

Rain. Snow level 4300 feet. Mostly cloudy, with a high near 42.

Sunday Night

Rain likely. Snow level 4400 feet. Mostly cloudy, with a low around 39.

Monday

Rain likely. Snow level 4400 feet. Mostly cloudy, with a high near 43.

Monday Night

A chance of rain. Snow level 4400 feet. Mostly cloudy, with a low around 37.

Tuesday

A slight chance of rain. Snow level 4500 feet. Mostly sunny, with a high near 46.