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 >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

12°F

-11°C

Humidity 64%
Wind Speed NW 18 G 29 mph
Barometer 30.06 in (1021.6 mb)
Dewpoint 2°F (-17°C)
Visibility NA
Wind Chill-5°F (-21°C)
Last update 21 Jan 5:56 pm CST
Extended Forecast for

Grenville SD

Extreme Cold Watch January 22, 06:00pm until January 23, 03:00pm
Click here for hazard details and duration
Extreme Cold Watch
  • Tonight

    Tonight: Isolated snow showers.  Patchy blowing snow before 9pm. Mostly cloudy, with a low around -3. Blustery, with a west northwest wind 14 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 20%.

    Low: -3 °F

    Isolated Snow
    Showers and
    Patchy
    Blowing Snow

  • Thursday

    Thursday: Patchy blowing snow after 10am. Cloudy, then gradually becoming mostly sunny and cold, with a temperature falling to around -9 by 5pm. Wind chill values as low as -34. Blustery, with a northwest wind 14 to 23 mph, with gusts as high as 36 mph.

    High: 5 °F

    Patchy
    Blowing Snow
    and Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -23. Wind chill values as low as -44. North northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: -23 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -13. Wind chill values as low as -44. West northwest wind 5 to 10 mph.

    High: -13 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -18. West northwest wind around 6 mph becoming south after midnight.

    Low: -18 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. South wind 6 to 8 mph.

    High: 0 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -13. South wind around 8 mph becoming northeast after midnight.

    Low: -13 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near -3. North northwest wind around 9 mph.

    High: -3 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -15. Northwest wind 9 to 11 mph becoming west southwest after midnight.

    Low: -15 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated snow showers. Patchy blowing snow before 9pm. Mostly cloudy, with a low around -3. Blustery, with a west northwest wind 14 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Thursday
Patchy blowing snow after 10am. Cloudy, then gradually becoming mostly sunny and cold, with a temperature falling to around -9 by 5pm. Wind chill values as low as -34. Blustery, with a northwest wind 14 to 23 mph, with gusts as high as 36 mph.
Thursday Night
Partly cloudy, with a low around -23. Wind chill values as low as -44. North northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Friday
Sunny and cold, with a high near -13. Wind chill values as low as -44. West northwest wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around -18. West northwest wind around 6 mph becoming south after midnight.
Saturday
Mostly sunny and cold, with a high near 0. South wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around -13. South wind around 8 mph becoming northeast after midnight.
Sunday
Mostly sunny and cold, with a high near -3. North northwest wind around 9 mph.
Sunday Night
Partly cloudy, with a low around -15. Northwest wind 9 to 11 mph becoming west southwest after midnight.
Monday
Mostly sunny, with a high near 12.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Partly sunny, with a high near 15.
Tuesday Night
Mostly cloudy, with a low around -3.
Wednesday
Mostly sunny, with a high near 11.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
5:56 pm CST Jan 21, 2026
6pm CST Jan 21, 2026-6pm CST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database