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

Heavy Rain Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

Heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest into Sunday. The tropical wave (AL94) continues to bring heavy rainfall to Puerto Rico and the US Virgin Islands. The close proximity of Tropical Storm Humberto and AL94 could lead to interaction between them, but details of their track and intensity forecasts remain uncertain Read More >

Hazardous Weather Conditions

Current conditions at

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

41°F

5°C

Humidity 89%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 25 Sep 07:06 AM PDT
Extended Forecast for

4 Miles SSW Winthrop WA

Red Flag Warning September 25, 01:00pm until September 25, 11:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Increasing clouds, with a high near 73. Northwest wind 5 to 15 mph, with gusts as high as 24 mph.

    High: 73 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 69. Northwest wind 5 to 8 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. West wind 5 to 8 mph becoming calm in the evening.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 73. Northwest wind 5 to 15 mph, with gusts as high as 24 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind 10 to 15 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 69. Northwest wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 46. West wind 5 to 8 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 49.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 65.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 43.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 61.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Winthrop WA
 48.41°N 120.2°W (Elev. 2871 ft)
Last Update:
4:16 am PDT Sep 25, 2025
Forecast Valid:
8am PDT Sep 25, 2025-6pm PDT Oct 1, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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