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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

White Pass (TWHIT)

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

unknown precip

51°F

11°C

Humidity 40%
Wind Speed NE 5 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility 1.24 mi
Last update 21 May 08:15 AM PDT
Extended Forecast for

Chinook Pass WA

  • Today

    Today: Increasing clouds, with a high near 66. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 42. North wind 3 to 7 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 11pm, mixing with snow after 2am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Memorial Day

    Memorial Day: Rain and snow likely, mainly after 11am. Mostly cloudy, with a high near 47.

    High: 47 °F

    Rain/Snow
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 66. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 42. North wind 3 to 7 mph.
Friday
Sunny, with a high near 67. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Partly cloudy, with a low around 43. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 66. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 60.
Sunday Night
A chance of rain after 11pm, mixing with snow after 2am. Mostly cloudy, with a low around 38.
Memorial Day
Rain and snow likely, mainly after 11am. Mostly cloudy, with a high near 47.
Monday Night
Rain and snow likely before 2am, then a chance of snow. Mostly cloudy, with a low around 34.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 51.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 37.
Wednesday
A chance of rain. Mostly sunny, with a high near 58.
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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:
11:26 pm PDT May 20, 2026
Forecast Valid:
8am PDT May 21, 2026-6pm PDT May 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation