Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast and Breezy

3°F

-16°C

Humidity 78%
Wind Speed NW 25 G 31 mph
Barometer 30.42 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-20°F (-29°C)
Last update 29 Dec 12:35 am CST
Extended Forecast for

Gettysburg SD

  • Overnight

    Overnight: Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 16 to 23 mph, with gusts as high as 33 mph.

    Low: -1 °F

    Mostly Cloudy
    and Blustery

  • Monday

    Monday: Sunny, with a high near 19. Wind chill values as low as -19. Northwest wind 9 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 19 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. Southwest wind 9 to 11 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 38. West wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 38 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16. Northwest wind 8 to 13 mph becoming northeast after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 26. Northeast wind 9 to 14 mph.

    High: 26 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7. East northeast wind 8 to 11 mph.

    Low: 7 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 24. East southeast wind around 9 mph becoming west in the afternoon.

    High: 24 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10. East wind 7 to 10 mph.

    Low: 10 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 16 to 23 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 19. Wind chill values as low as -19. Northwest wind 9 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Partly cloudy, with a low around 12. Southwest wind 9 to 11 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 38. West wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 16. Northwest wind 8 to 13 mph becoming northeast after midnight.
Wednesday
Partly sunny, with a high near 26. Northeast wind 9 to 14 mph.
Wednesday Night
Mostly cloudy, with a low around 7. East northeast wind 8 to 11 mph.
New Year's Day
Partly sunny, with a high near 24. East southeast wind around 9 mph becoming west in the afternoon.
Thursday Night
Mostly cloudy, with a low around 10. East wind 7 to 10 mph.
Friday
Partly sunny, with a high near 24.
Friday Night
Mostly cloudy, with a low around 11.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
A slight chance of snow. Partly sunny, with a high near 28. Chance of precipitation is 20%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Gettysburg SD
 45.01°N 99.96°W (Elev. 2057 ft)
12:36 am CST Dec 29, 2025
12am CST Dec 29, 2025-6pm CST Jan 4, 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