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.

light rain,fog

33°F

1°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	29.39 in (995.26 mb)
Dewpoint	33°F (1°C)
Visibility	0.25 mi
Last update	24 Dec 11:56 AM PST

More Information:

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

Extended Forecast for

5 Miles SSW Snoqualmie Pass WA

This Afternoon
High: 36 °F
Rain/Snow and
Breezy
Tonight
Low: 31 °F
Chance Snow
Christmas Day
High: 33 °F
Snow
Thursday Night
Low: 28 °F
Snow
Friday
High: 30 °F
Snow
Friday Night
Low: 23 °F
Snow Likely
then Chance
Snow
Saturday
High: 27 °F
Slight Chance
Snow then
Mostly Cloudy
Saturday Night
Low: 22 °F
Mostly Cloudy
Sunday
High: 32 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

Rain before 1pm, then rain, possibly mixed with snow. High near 36. Breezy, with a southeast wind 15 to 24 mph becoming south. Winds could gust as high as 40 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tonight

A chance of snow before 7pm, then a chance of snow after 4am. Mostly cloudy, with a steady temperature around 31. West wind 8 to 13 mph becoming east in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

Christmas Day

Snow, mainly after 10am. High near 33. East wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Thursday Night

Snow, mainly before 10pm. Low around 28. South wind around 7 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Friday

Snow. High near 30. West wind 9 to 14 mph, with gusts as high as 25 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 23. 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 27.

Saturday Night

Mostly cloudy, with a low around 22.

Sunday

Mostly cloudy, with a high near 32.

Sunday Night

Mostly cloudy, with a low around 25.

Monday

Mostly cloudy, with a high near 36.

Monday Night

Mostly cloudy, with a low around 28.