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

Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Rain

N/A

Humidity NA
Wind Speed SE 9 mph
Barometer 29.94 in
Dewpoint N/A
Visibility 2.00 mi
Last update 30 Jul 12:35 pm CDT
Extended Forecast for

6 Miles NNE Stephan SD

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 80. Calm wind becoming east southeast around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 63. Breezy, with an east wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    T-storms
    Likely then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 80. Breezy, with a north wind 17 to 21 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. North northeast wind 8 to 13 mph becoming light and variable after midnight.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Light south wind increasing to 5 to 9 mph in the morning.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. South southeast wind 11 to 15 mph, with gusts as high as 23 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Breezy, with a south wind 15 to 25 mph, with gusts as high as 34 mph.

    High: 89 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Breezy, with a south southeast wind 22 to 24 mph, with gusts as high as 32 mph.

    Low: 68 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Mostly sunny and hot, with a high near 90. Breezy, with a south wind 22 to 25 mph, with gusts as high as 33 mph.

    High: 90 °F

    Hot and
    Breezy

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 80. Calm wind becoming east southeast around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 2am, then a chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 63. Breezy, with an east wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Mostly sunny, with a high near 80. Breezy, with a north wind 17 to 21 mph.
Friday Night
Mostly clear, with a low around 60. North northeast wind 8 to 13 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 84. Light south wind increasing to 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 64. South southeast wind 11 to 15 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 89. Breezy, with a south wind 15 to 25 mph, with gusts as high as 34 mph.
Sunday Night
Mostly clear, with a low around 68. Breezy, with a south southeast wind 22 to 24 mph, with gusts as high as 32 mph.
Monday
Mostly sunny and hot, with a high near 90. Breezy, with a south wind 22 to 25 mph, with gusts as high as 33 mph.
Monday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62. Breezy. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNE Stephan SD
 44.33°N 99.41°W (Elev. 1959 ft)
Last Update:
12:36 pm CDT Jul 30, 2026
Forecast Valid:
12pm CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
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