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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Stampede Pass (KSMP)

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

Clear

62°F

17°C

Humidity 57%
Wind Speed NA 3 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 18 Sep 02:56 PM PDT
Extended Forecast for

11 Miles E Snoqualmie Pass WA

  • Tonight

    Tonight: Widespread haze. Patchy smoke after 2am. Mostly clear, with a low around 51. Northwest wind 3 to 6 mph.

    Low: 51 °F

    Haze

  • Friday

    Friday: Widespread haze after 11am. Areas of smoke before 2pm. Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Haze

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. Northwest wind 3 to 6 mph.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. West wind 3 to 8 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Showers likely after 11pm. Mostly cloudy, with a low around 50. West wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 11am. Partly sunny, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze. Patchy smoke after 2am. Mostly clear, with a low around 51. Northwest wind 3 to 6 mph.
Friday
Widespread haze after 11am. Areas of smoke before 2pm. Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 50. Northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 77. West wind 3 to 8 mph.
Saturday Night
Showers likely after 11pm. Mostly cloudy, with a low around 50. West wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers likely, mainly before 11am. Partly sunny, with a high near 63. Chance of precipitation is 70%.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 80.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 49.
Thursday
A chance of showers. Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles E Snoqualmie Pass WA
 47.42°N 121.16°W (Elev. 2818 ft)
Last Update:
3:20 pm PDT Sep 18, 2025
Forecast Valid:
3pm PDT Sep 18, 2025-6pm PDT Sep 25, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation