National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Late Season Winter Storms

A moderate atmospheric river will continue to bring heavy snow over the Olympics, northern Cascades and northern Rockies Friday while heavy rain may bring flooding to coastal Oregon and Washington. A winter storm will continue to push across the Great Lakes and Northeast U.S. Friday and Saturday with areas of heavy snow and high winds. Read More >

Hazardous Weather Conditions

Current conditions at

White Pass (TWHIT)

Lat: 46.638°NLon: 121.39°WElev: 4498.0ft.

unknown precip

36°F

2°C

Humidity NA
Wind Speed W 9 MPH
Barometer NA
Dewpoint N/A
Visibility 1.24 mi
Wind Chill29°F (-2°C)
Last update NA
Extended Forecast for

Chinook Pass WA

Winter Storm Warning March 12, 07:54pm until March 14, 05:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning March 12, 07:54pm until March 14, 05:00am

    NOW until 5:00am Sat

    Winter Storm Warning

  • Tonight

    Low: 30 °F⇑

    Rain/Snow

  • Friday

    Friday: Snow, possibly mixed with rain, becoming all snow after 8am. The rain and snow could be heavy at times. High near 36. South wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    High: 36 °F

    Rain/Snow
    then Heavy
    Snow

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Low around 21. West southwest wind 5 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.

    Low: 21 °F

    Heavy Snow

  • Saturday

    Saturday: Snow. High near 30. Wind chill values between 12 and 19. West wind 10 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around 19. West northwest wind 6 to 11 mph becoming light west in the evening. Winds could gust as high as 31 mph. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Snow, mainly after 11am. High near 37. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow

  • Sunday Night

    Sunday Night: Rain, possibly mixed with snow, becoming all rain after 2am. Low around 33. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain likely. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain Likely

Detailed Forecast

Tonight
Snow before 11pm, then snow, possibly mixed with rain. The rain and snow could be heavy at times. Temperature rising to around 34 by 4am. Wind chill values between 21 and 26. South southwest wind 7 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 14 to 20 inches possible.
Friday
Snow, possibly mixed with rain, becoming all snow after 8am. The rain and snow could be heavy at times. High near 36. South wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Friday Night
Snow. The snow could be heavy at times. Low around 21. West southwest wind 5 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.
Saturday
Snow. High near 30. Wind chill values between 12 and 19. West wind 10 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday Night
A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around 19. West northwest wind 6 to 11 mph becoming light west in the evening. Winds could gust as high as 31 mph. New snow accumulation of less than a half inch possible.
Sunday
Snow, mainly after 11am. High near 37. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday Night
Rain, possibly mixed with snow, becoming all rain after 2am. Low around 33. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
Rain likely. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain. Mostly cloudy, with a low around 35.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 37.
Wednesday
Rain. Mostly cloudy, with a high near 48.
Wednesday Night
Rain. Mostly cloudy, with a low around 36.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chinook Pass WA
 46.86°N 121.53°W (Elev. 3973 ft)
Last Update:
2:26 pm PDT Mar 12, 2026
Forecast Valid:
7pm PDT Mar 12, 2026-6pm PDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation