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.

32°F

0°C

Humidity	99%
Wind Speed	NNE 0 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	31 Dec 06:52 AM PST

More Information:

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

Extended Forecast for

3 Miles SE Illinois Valley OR

Air Stagnation Advisory December 31, 07:00am until December 31, 04:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory December 31, 07:00am until December 31, 04:00pm
NOW until 4:00pm Wed
Air Stagnation Advisory
Today
High: 44 °F
Freezing Fog
and Fog then
Chance Rain
Tonight
Low: 40 °F
Rain Likely
New Year's Day
High: 49 °F
Rain
Thursday Night
Low: 42 °F
Rain then
Rain Likely
Friday
High: 54 °F
Rain
Friday Night
Low: 39 °F
Rain
Saturday
High: 47 °F
Rain
Saturday Night
Low: 37 °F
Rain

Detailed Forecast

Today

A 30 percent chance of rain, mainly after 5pm. Widespread fog before 11am. Widespread freezing fog before 10am. Otherwise, partly sunny, with a high near 44. Calm wind.

Tonight

Rain likely, mainly after 11pm. Cloudy, with a low around 40. Light and variable wind. 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. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain, mainly before 4am. Low around 42. Southwest wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain, mainly after 10am. High near 54. Southeast wind 6 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain. Low around 39. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday

Rain. High near 47. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Saturday Night

Rain. Snow level 4700 feet. Cloudy, with a low around 37.

Sunday

Rain. Snow level 4400 feet. Mostly cloudy, with a high near 45.

Sunday Night

Rain likely. Snow level 4400 feet. Mostly cloudy, with a low around 35.

Monday

Rain likely. Snow level 4400 feet. Mostly cloudy, with a high near 46.