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

Winter Storm Warning until December 26, 04:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

38°F

3°C

Humidity	99%
Wind Speed	SE 0 MPH
Barometer	NA
Dewpoint	38°F (3°C)
Visibility	NA
Last update	26 Dec 03:52 AM PST

More Information:

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

Extended Forecast for

4 Miles N Happy Camp CA

Winter Storm Warning December 26, 04:00am until December 26, 04:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 26, 04:00am until December 26, 04:00pm
NOW until 4:00pm Fri
Winter Storm Warning
Overnight
Low: 31 °F
Snow
Friday
High: 35 °F
Rain/Snow
Friday Night
Low: 26 °F
Snow Showers
then Chance
Snow Showers
Saturday
High: 34 °F
Chance Snow
Showers
Saturday Night
Low: 25 °F
Partly Cloudy
Sunday
High: 38 °F
Mostly Sunny
Sunday Night
Low: 29 °F
Partly Cloudy
Monday
High: 42 °F
Sunny

Detailed Forecast

Overnight

Snow. Steady temperature around 31. Southeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.

Friday

Rain and snow. Snow level rising to 4100 feet in the afternoon. High near 35. East wind 6 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Friday Night

Snow showers, mainly before 7pm. Low around 26. Northwest wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Saturday

A 30 percent chance of snow showers. Mostly sunny, with a high near 34. North wind around 7 mph. Little or no snow accumulation expected.

Saturday Night

Partly cloudy, with a low around 25. East northeast wind 7 to 9 mph.

Sunday

Mostly sunny, with a high near 38.

Sunday Night

Partly cloudy, with a low around 29.

Monday

Sunny, with a high near 42.

Monday Night

Mostly clear, with a low around 32.