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

Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Hazardous Weather Conditions

Current conditions at

SISTERS (K6K5)

Lat: 44.30445°NLon: 121.53909°WElev: 3168.0ft.

NA

25°F

-4°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 21°F (-6°C)
Visibility NA
Last update 21 Jan 03:55 PM PST
Extended Forecast for

5 Miles S Sisters OR

  • Tonight

    Tonight: Increasing clouds, with a low around 20. Calm wind.

    Low: 20 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind.

    High: 41 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30. Light northeast wind.

    High: 30 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 13. Calm wind.

    Low: 13 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 20. Calm wind.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind.
Thursday Night
Mostly cloudy, with a low around 18. Calm wind.
Friday
Mostly sunny, with a high near 30. Light northeast wind.
Friday Night
Mostly clear, with a low around 13. Calm wind.
Saturday
Sunny, with a high near 39.
Saturday Night
Mostly clear, with a low around 20.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
A chance of snow. Snow level 4800 feet. Mostly cloudy, with a low around 27.
Wednesday
A chance of rain and snow. Snow level 4600 feet rising to 5400 feet in the afternoon. Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Sisters OR
 44.22°N 121.56°W (Elev. 3766 ft)
Last Update:
3:20 pm PST Jan 21, 2026
Forecast Valid:
5pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

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