Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Wind Advisory until December 24, 01:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

40°F

4°C

Humidity	99%
Wind Speed	W 1 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	24 Dec 05:52 AM PST

More Information:

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

Extended Forecast for

17 Miles SSE Agness OR

Wind Advisory December 24, 06:45am until December 24, 01:00pm

Click here for hazard details and duration

Wind Advisory

Wind Advisory December 24, 06:45am until December 24, 01:00pm
NOW until 1:00pm Wed
Wind Advisory
Today
High: 48 °F⇓
Rain and
Windy then
Chance Rain
Tonight
Low: 40 °F
Rain
Christmas Day
High: 42 °F
Rain and
Breezy
Thursday Night
Low: 38 °F
Rain
Friday
High: 41 °F
Rain
Friday Night
Low: 34 °F
Rain/Snow
Likely then
Chance
Rain/Snow
Saturday
High: 42 °F
Slight Chance
Rain/Snow
then Sunny
Saturday Night
Low: 32 °F
Partly Cloudy

Detailed Forecast

Today

Rain before 1pm, then a chance of rain after 5pm. Snow level 6500 feet lowering to 4000 feet. Temperature falling to around 38 by 10am. Windy, with a south wind 27 to 32 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Tonight

Rain. Snow level 4800 feet rising to 5300 feet after midnight. Low around 40. Southeast wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Christmas Day

Rain. Snow level 4000 feet. High near 42. Breezy, with a south wind 21 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain. Snow level 3800 feet. Low around 38. South wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Rain. Snow level 3700 feet. High near 41. East wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Rain and snow likely before 1am, then a chance of rain between 1am and 4am, then a slight chance of rain and snow after 4am. Snow level 3300 feet. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. Little or no snow accumulation expected.

Saturday

A slight chance of rain and snow before 10am. Snow level 3000 feet. Mostly sunny, with a high near 42. Chance of precipitation is 20%.

Saturday Night

Partly cloudy, with a low around 32.

Sunday

Mostly sunny, with a high near 47.

Sunday Night

Partly cloudy, with a low around 35.

Monday

Sunny, with a high near 51.

Monday Night

Mostly clear, with a low around 38.