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

SIMS (SMSC1)

Lat: 41.0713°NLon: 122.36993°WElev: 2537.0ft.

44°F

7°C

Humidity	97%
Wind Speed	S 9 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Wind Chill	39°F (4°C)
Last update	25 Dec 07:32 AM PST

More Information:

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

Extended Forecast for

5 Miles SW Dunsmuir CA

Flood Watch December 25, 08:15am until December 26, 04:00pm

Winter Storm Warning until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Winter Storm Warning

Flood Watch December 25, 08:15am until December 26, 04:00pm
Winter Storm Warning until December 26, 10:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Christmas Day
High: 38 °F
Rain
Tonight
Low: 38 °F
Rain then
Rain/Snow
Friday
High: 39 °F
Rain/Snow
then Rain
Friday Night
Low: 30 °F
Rain/Snow
then Chance
Rain/Snow
Saturday
High: 40 °F
Chance Snow
Saturday Night
Low: 27 °F
Partly Cloudy
Sunday
High: 43 °F
Mostly Sunny
Sunday Night
Low: 33 °F
Mostly Clear

Detailed Forecast

Christmas Day

Rain. Steady temperature around 38. South wind 13 to 15 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Tonight

Rain before 4am, then rain and snow. Steady temperature around 38. South southeast wind 8 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Friday

Rain and snow, becoming all rain after 10am. High near 39. South wind around 8 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Friday Night

Rain before 10pm, then a chance of rain and snow between 10pm and 1am, then a chance of snow after 1am. Low around 30. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Saturday

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

Saturday Night

Partly cloudy, with a low around 27.

Sunday

Mostly sunny, with a high near 43.

Sunday Night

Mostly clear, with a low around 33.

Monday

Sunny, with a high near 49.

Monday Night

Mostly clear, with a low around 36.