Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Hydrologic Outlook

Current conditions at

Stampede Pass (KSMP)

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

Overcast

36°F

2°C

Humidity	100%
Wind Speed	W 8 MPH
Barometer	30.04 in (1017.27 mb)
Dewpoint	36°F (2°C)
Visibility	10.00 mi
Wind Chill	30°F (-1°C)
Last update	07 Dec 08:15 PM PST

More Information:

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

Extended Forecast for

3 Miles SSW Snoqualmie Pass WA

Tonight
Low: 36 °F
Rain/Snow
Monday
High: 43 °F
Heavy Rain
Monday Night
Low: 33 °F
Rain/Snow
Tuesday
High: 39 °F
Rain/Snow
Tuesday Night
Low: 35 °F
Rain/Snow
Wednesday
High: 40 °F
Heavy Rain
Wednesday Night
Low: 36 °F
Rain/Snow
Thursday
High: 39 °F
Rain/Snow
Likely
Thursday Night
Low: 38 °F
Rain/Snow
Likely

Detailed Forecast

Tonight

A chance of rain before 10pm, then rain, possibly mixed with snow. Low around 36. West wind 9 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday

Rain, mainly after 7am. The rain could be heavy at times. High near 43. Southwest wind 7 to 13 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Monday Night

Rain before 10pm, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 33. West wind 18 to 21 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Tuesday

Snow, possibly mixed with rain before 7am, then snow between 7am and 1pm, then rain, possibly mixed with snow after 1pm. High near 39. West wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Tuesday Night

Rain, possibly mixed with snow, becoming all rain after 1am. The rain could be heavy at times. Low around 35. Southeast wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday

Rain. The rain could be heavy at times. High near 40. Chance of precipitation is 100%.

Wednesday Night

Rain, possibly mixed with snow. The rain could be heavy at times. Low around 36. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday

Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 39. Chance of precipitation is 70%.

Thursday Night

Rain likely before 10pm, then rain likely, possibly mixed with snow between 10pm and 1am, then rain likely after 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.

Friday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 42.

Friday Night

A chance of rain. Mostly cloudy, with a low around 37.

Saturday

Rain likely. Mostly cloudy, with a high near 41.

Saturday Night

Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 35.

Sunday

Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 38.