Tropical Storm Edouard Impacting the Northwestern Gulf Coast; Hazardous Heat expands in the East

Tropical Storm Edouard will impact the northwestern Gulf Coast through Wednesday with gusty winds, storm surge, and heavy rainfall. Flash and river flooding will be possible, especially in southeastern Texas. Hazardous heat will expand across the central and eastern U.S. by mid-week, and daily chances for severe thunderstorms are expected from the eastern Great Lakes to the Mid-Atlantic this week. Read More >

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

N/A

Humidity NA
Wind Speed E 3 mph
Barometer 29.91 in
Dewpoint N/A
Visibility 10.00 mi
Last update 1 Sep 11:15 pm CDT
Extended Forecast for

Stephan SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. East northeast wind 8 to 11 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Northeast wind 7 to 10 mph becoming southeast in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms between midnight and 1am.  Partly cloudy, with a low around 65. East southeast wind 8 to 11 mph.  Chance of precipitation is 20%.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 90. South southwest wind around 8 mph.

    High: 90 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. East wind around 6 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 91. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 91 °F

    Hot

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 69. Southeast wind 10 to 13 mph.  Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers before 1pm.  Mostly sunny and hot, with a high near 91. South wind 8 to 11 mph.  Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 65. East wind 8 to 10 mph.  Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. East northeast wind 8 to 11 mph.
Wednesday
Mostly sunny, with a high near 84. Northeast wind 7 to 10 mph becoming southeast in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms between midnight and 1am. Partly cloudy, with a low around 65. East southeast wind 8 to 11 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 90. South southwest wind around 8 mph.
Thursday Night
Mostly clear, with a low around 66. East wind around 6 mph.
Friday
Sunny and hot, with a high near 91. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Friday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. Southeast wind 10 to 13 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers before 1pm. Mostly sunny and hot, with a high near 91. South wind 8 to 11 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. East wind 8 to 10 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 20%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Labor Day
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Tuesday
A slight chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.44°W (Elev. 1811 ft)
11:06 pm CDT Sep 1, 2026
11pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database