Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Partly Cloudy and Breezy

19°F

-7°C

Humidity 63%
Wind Speed NW 24 G 32 mph
Barometer 30.12 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 21 Jan 5:15 pm CST
Extended Forecast for

3 Miles N Gettysburg SD

Extreme Cold Watch January 22, 06:00pm until January 23, 03:00pm
Winter Weather Advisory January 21, 05:28pm until January 21, 06:00pm
Click here for hazard details and duration
Extreme Cold Watch
Winter Weather Advisory
  •  
    Winter Weather Advisory January 21, 05:28pm until January 21, 06:00pm

    NOW until 6:00pm Wed

    Winter Weather Advisory

  • This Afternoon

    High: 17 °F

    Isolated Snow
    Showers and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Isolated snow showers.  Increasing clouds, with a low around 2. Blustery, with a west northwest wind 14 to 23 mph, with gusts as high as 33 mph.  Chance of precipitation is 20%.

    Low: 2 °F

    Isolated Snow
    Showers and
    Blustery

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny and cold, with a temperature falling to around -3 by 5pm. Wind chill values as low as -27. Blustery, with a north northwest wind 16 to 25 mph, with gusts as high as 36 mph.

    High: 8 °F

    Cold and
    Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -21. Wind chill values as low as -41. North wind 11 to 18 mph.

    Low: -21 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -8. North northwest wind 6 to 10 mph becoming northeast in the afternoon.

    High: -8 °F

    Cold

  • Friday Night

    Friday Night: A slight chance of snow.  Mostly cloudy, with a low around -14. East wind 6 to 9 mph becoming south southeast in the evening.  Chance of precipitation is 20%.

    Low: -14 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 5. South wind around 9 mph.

    High: 5 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -13. Southeast wind 8 to 10 mph becoming north northeast after midnight.

    Low: -13 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Isolated snow showers. Patchy blowing snow. Mostly cloudy, with a steady temperature around 17. Windy, with a northwest wind around 30 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Tonight
Isolated snow showers. Increasing clouds, with a low around 2. Blustery, with a west northwest wind 14 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Thursday
Cloudy, then gradually becoming mostly sunny and cold, with a temperature falling to around -3 by 5pm. Wind chill values as low as -27. Blustery, with a north northwest wind 16 to 25 mph, with gusts as high as 36 mph.
Thursday Night
Partly cloudy, with a low around -21. Wind chill values as low as -41. North wind 11 to 18 mph.
Friday
Mostly sunny and cold, with a high near -8. North northwest wind 6 to 10 mph becoming northeast in the afternoon.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around -14. East wind 6 to 9 mph becoming south southeast in the evening. Chance of precipitation is 20%.
Saturday
Mostly sunny and cold, with a high near 5. South wind around 9 mph.
Saturday Night
Partly cloudy, with a low around -13. Southeast wind 8 to 10 mph becoming north northeast after midnight.
Sunday
Mostly sunny and cold, with a high near 0. North northwest wind around 11 mph.
Sunday Night
Partly cloudy, with a low around -13.
Monday
Mostly sunny, with a high near 20.
Monday Night
Partly cloudy, with a low around 4.
Tuesday
Partly sunny, with a high near 20.
Tuesday Night
Mostly cloudy, with a low around 1.
Wednesday
Mostly sunny, with a high near 16.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Gettysburg SD
 45.05°N 99.96°W (Elev. 2198 ft)
5:11 pm CST Jan 21, 2026
5pm 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