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

Atmospheric River to Impact the Northwest; Windy Conditions in the Northeast

A strong atmospheric river moving into northern California later today will bring a threat for moderate to heavy rainfall and flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. through Wednesday. Gusty winds and isolated showers are expected today in the Northeast U.S. behind a cold front. Wind Advisories have been issued. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

42°F

6°C

Humidity 69%
Wind Speed S 7 mph
Barometer 29.91 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 4 Nov 8:15 am CST
Extended Forecast for

Iona SD

  • Today

    Today: Sunny, with a high near 68. South wind 10 to 17 mph becoming northwest in the afternoon.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 35. North northwest wind 11 to 17 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 53. North northwest wind 7 to 14 mph becoming south southeast in the afternoon.

    High: 53 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 37 mph.

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Partly sunny, with a high near 65. Breezy, with a south wind 18 to 28 mph becoming west northwest in the afternoon. Winds could gust as high as 37 mph.

    High: 65 °F

    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a west northwest wind 16 to 23 mph, with gusts as high as 32 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Sunny, with a high near 54. Breezy, with a west northwest wind 18 to 23 mph becoming north northeast 11 to 16 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35. Northeast wind 9 to 17 mph becoming west after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain before noon. Partly sunny, with a high near 50. Windy, with a west northwest wind 18 to 23 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain and
    Breezy then
    Partly Sunny
    and Windy

Detailed Forecast

Today
Sunny, with a high near 68. South wind 10 to 17 mph becoming northwest in the afternoon.
Tonight
Partly cloudy, with a low around 35. North northwest wind 11 to 17 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 53. North northwest wind 7 to 14 mph becoming south southeast in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 41. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 37 mph.
Thursday
Partly sunny, with a high near 65. Breezy, with a south wind 18 to 28 mph becoming west northwest in the afternoon. Winds could gust as high as 37 mph.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a west northwest wind 16 to 23 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 54. Breezy, with a west northwest wind 18 to 23 mph becoming north northeast 11 to 16 mph in the afternoon. Winds could gust as high as 32 mph.
Friday Night
Mostly cloudy, with a low around 35. Northeast wind 9 to 17 mph becoming west after midnight.
Saturday
A slight chance of rain before noon. Partly sunny, with a high near 50. Windy, with a west northwest wind 18 to 23 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 25. Blustery.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 48. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Iona SD
 43.54°N 99.44°W (Elev. 1923 ft)
Last Update:
7:36 am CST Nov 4, 2025
Forecast Valid:
8am CST Nov 4, 2025-6pm CST Nov 10, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation