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

Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Winner, Bob Wiley Field Airport (KICR)

Lat: 43.39°NLon: 99.84°WElev: 2031ft.

Fair

53°F

12°C

Humidity 45%
Wind Speed W 18 G 28 mph
Barometer 29.87 in (1013.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 8 Dec 2:53 pm CST
Extended Forecast for

New Witten SD

High Wind Warning December 9, 09:00am until December 10, 03:00am
Click here for hazard details and duration
High Wind Warning

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Southwest wind 13 to 16 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. Windy, with a southwest wind 18 to 23 mph increasing to 31 to 36 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 58 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. Wind chill values as low as 15. Windy, with a northwest wind 28 to 33 mph decreasing to 21 to 26 mph after midnight. Winds could gust as high as 50 mph.

    Low: 26 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 37. Wind chill values as low as 15. Northwest wind 10 to 18 mph becoming southeast in the afternoon. Winds could gust as high as 28 mph.

    High: 37 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A chance of snow before 9pm, then a chance of rain and snow. Cloudy, with a low around 24. Southeast wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 24 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before noon, then a slight chance of snow. Mostly cloudy, with a high near 37. Northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 6. Blustery, with a north wind 14 to 21 mph, with gusts as high as 29 mph.

    Low: 6 °F

    Chance Snow
    and Blustery

  • Friday

    Friday: A slight chance of snow before noon. Mostly cloudy, with a high near 16. Blustery, with a north wind 14 to 22 mph, with gusts as high as 30 mph.

    High: 16 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 30. Southwest wind 13 to 16 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 58. Windy, with a southwest wind 18 to 23 mph increasing to 31 to 36 mph in the afternoon. Winds could gust as high as 55 mph.
Tuesday Night
Partly cloudy, with a low around 26. Wind chill values as low as 15. Windy, with a northwest wind 28 to 33 mph decreasing to 21 to 26 mph after midnight. Winds could gust as high as 50 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 37. Wind chill values as low as 15. Northwest wind 10 to 18 mph becoming southeast in the afternoon. Winds could gust as high as 28 mph.
Wednesday Night
A chance of snow before 9pm, then a chance of rain and snow. Cloudy, with a low around 24. Southeast wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
A chance of rain and snow before noon, then a slight chance of snow. Mostly cloudy, with a high near 37. Northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 6. Blustery, with a north wind 14 to 21 mph, with gusts as high as 29 mph.
Friday
A slight chance of snow before noon. Mostly cloudy, with a high near 16. Blustery, with a north wind 14 to 22 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 4.
Saturday
A slight chance of snow before noon. Mostly cloudy, with a high near 22.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Witten SD
 43.43°N 100.09°W (Elev. 2064 ft)
Last Update:
1:17 pm CST Dec 8, 2025
Forecast Valid:
3pm CST Dec 8, 2025-6pm CST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation