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Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

White Pass (TWHIT)

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

NA

N/A

Humidity 70%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint N/A
Visibility 1.24 mi
Last update 03 Apr 10:56 AM PDT
Extended Forecast for

Chinook Pass WA

  • Overnight

    Overnight: Rain likely before 5am, then rain likely, possibly mixed with snow. Mostly cloudy, with a steady temperature around 39. South southwest wind around 5 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 39 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: Rain and snow, mainly before 1pm. High near 38. Southwest wind 5 to 9 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 32. West southwest wind 5 to 7 mph becoming north after midnight.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of rain after 11am. Mostly cloudy, with a high near 41. West northwest wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 41 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain before 8pm, then rain and snow between 8pm and 11pm, then a chance of snow after 11pm. Low around 31. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    then Chance
    Snow

  • Monday

    Monday: Snow likely, mainly after 11am. Mostly cloudy, with a high near 33. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely

  • Monday Night

    Monday Night: A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 27. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Snow, mainly after 11am. Mostly cloudy, with a high near 31.

    High: 31 °F

    Snow

  • Tuesday Night

    Tuesday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 22.

    Low: 22 °F

    Heavy Snow

Detailed Forecast

Overnight
Rain likely before 5am, then rain likely, possibly mixed with snow. Mostly cloudy, with a steady temperature around 39. South southwest wind around 5 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
Rain and snow, mainly before 1pm. High near 38. Southwest wind 5 to 9 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 32. West southwest wind 5 to 7 mph becoming north after midnight.
Sunday
A 50 percent chance of rain after 11am. Mostly cloudy, with a high near 41. West northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Rain before 8pm, then rain and snow between 8pm and 11pm, then a chance of snow after 11pm. Low around 31. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Snow likely, mainly after 11am. Mostly cloudy, with a high near 33. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 27. New snow accumulation of less than a half inch possible.
Tuesday
Snow, mainly after 11am. Mostly cloudy, with a high near 31.
Tuesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 22.
Wednesday
Snow. Cloudy, with a high near 27.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 18.
Thursday
A chance of snow. Partly sunny, with a high near 29.
Thursday Night
A slight chance of snow. Partly cloudy, with a low around 20.
Friday
A slight chance of snow. Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chinook Pass WA
 46.88°N 121.51°W (Elev. 4823 ft)
Last Update:
11:27 pm PDT Apr 10, 2026
Forecast Valid:
2am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation