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.

41°F

5°C

Humidity	98%
Wind Speed	WNW 0 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	24 Dec 09:52 PM PST

More Information:

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

Extended Forecast for

9 Miles ENE Happy Camp CA

Wind Advisory December 25, 01:00am until December 25, 01:00pm

Winter Storm Warning December 24, 10:57pm until December 26, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Storm Warning

Winter Storm Warning December 24, 10:57pm until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
Tonight
Low: 42 °F
Rain
Christmas Day
High: 49 °F
Rain
Thursday Night
Low: 36 °F
Rain
Friday
High: 47 °F
Rain
Friday Night
Low: 31 °F
Rain Likely
then Chance
Rain
Saturday
High: 45 °F
Slight Chance
Rain/Snow
then Mostly
Sunny
Saturday Night
Low: 27 °F
Partly Cloudy
Sunday
High: 49 °F
Mostly Sunny

Detailed Forecast

Tonight

Rain, mainly after 11pm. Steady temperature around 42. East wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Christmas Day

Rain. Snow level 4200 feet. High near 49. East wind 5 to 7 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain. Snow level 3800 feet. Low around 36. Southeast wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. Snow level 3800 feet. High near 47. Southeast wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Rain likely, mainly before 10pm. Snow level 3300 feet. Mostly cloudy, with a low around 31. Light and variable wind. Chance of precipitation is 70%.

Saturday

A slight chance of rain and snow before 10am. Snow level 2600 feet rising to 3300 feet in the afternoon. Mostly sunny, with a high near 45. Chance of precipitation is 20%.

Saturday Night

Partly cloudy, with a low around 27.

Sunday

Mostly sunny, with a high near 49.

Sunday Night

Mostly clear, with a low around 29.

Monday

Sunny, with a high near 52.

Monday Night

Mostly clear, with a low around 33.

Tuesday

Sunny, with a high near 56.