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

Special Weather Statement

Current conditions at

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

unknown precip,mist

32°F

0°C

Humidity	100%
Wind Speed	E 3 MPH
Barometer	29.36 in (994.24 mb)
Dewpoint	32°F (0°C)
Visibility	0.75 mi
Last update	24 Dec 06:38 AM PST

More Information:

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

Extended Forecast for

5 Miles S Snoqualmie Pass WA

Today
High: 38 °F
Rain/Snow
Tonight
Low: 27 °F
Chance
Rain/Snow
then Chance
Snow
Christmas Day
High: 36 °F
Snow then
Rain/Snow
Thursday Night
Low: 30 °F
Rain/Snow
Friday
High: 33 °F
Snow
Friday Night
Low: 25 °F
Snow Likely
then Chance
Snow
Saturday
High: 30 °F
Slight Chance
Snow then
Mostly Cloudy
Saturday Night
Low: 23 °F
Mostly Cloudy
Sunday
High: 35 °F
Mostly Cloudy

Detailed Forecast

Today

Rain and snow before 7am, then rain between 7am and 4pm, then a chance of rain and snow after 4pm. High near 38. Southeast wind 10 to 17 mph becoming south in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tonight

A chance of rain and snow before 7pm, then a chance of snow after 4am. Mostly cloudy, with a low around 27. West wind 6 to 8 mph becoming east after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

Christmas Day

Snow before 1pm, then rain and snow. High near 36. East wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday Night

Rain and snow, mainly before 10pm. Low around 30. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday

Snow. High near 33. West wind 3 to 8 mph. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 25. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

A 20 percent chance of snow before 10am. Mostly cloudy, with a high near 30.

Saturday Night

Mostly cloudy, with a low around 23.

Sunday

Mostly cloudy, with a high near 35.

Sunday Night

Mostly cloudy, with a low around 27.

Monday

Mostly cloudy, with a high near 38.

Monday Night

Mostly cloudy, with a low around 29.