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

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

42°F

6°C

Humidity	99%
Wind Speed	W 1 MPH
Barometer	NA
Dewpoint	42°F (6°C)
Visibility	NA
Last update	25 Dec 04:52 AM PST

More Information:

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

Extended Forecast for

12 Miles NNE Happy Camp CA

Wind Advisory until December 25, 01:00pm

Winter Storm Warning December 25, 05:43am until December 26, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Storm Warning

Wind Advisory until December 25, 01:00pm
Winter Storm Warning December 25, 05:43am until December 26, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 33 °F
Snow Showers
Christmas Day
High: 35 °F
Snow Showers
and Breezy
Thursday Night
Low: 29 °F
Snow Showers
Friday
High: 31 °F
Snow Showers
and Breezy
Friday Night
Low: 27 °F
Snow then
Chance Snow
Saturday
High: 30 °F
Chance Snow
Saturday Night
Low: 22 °F
Mostly Cloudy
Sunday
High: 35 °F
Mostly Sunny

Detailed Forecast

Overnight

Snow showers. Low around 33. South southeast wind around 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

Christmas Day

Snow showers, mainly before 3pm. High near 35. Breezy, with a south wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

Snow showers. Low around 29. South southwest wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow showers before 10am, then snow after 10am. High near 31. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

Snow, mainly before 10pm. Low around 27. West wind 10 to 13 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Saturday

A 40 percent chance of snow. Partly sunny, with a high near 30. New snow accumulation of less than a half inch possible.

Saturday Night

Mostly cloudy, with a low around 22.

Sunday

Mostly sunny, with a high near 35.

Sunday Night

Partly cloudy, with a low around 27.

Monday

Sunny, with a high near 40.

Monday Night

Partly cloudy, with a low around 31.