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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Rosebud Sioux Tribal Airport (KSUO)

Lat: 43.26°NLon: 100.86°WElev: 2724ft.

Mostly Cloudy

48°F

9°C

Humidity 25%
Wind Speed NW 14 G 22 mph
Barometer 30.09 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 18 Apr 5:55 pm CDT
Extended Forecast for

Long Valley SD

  • Tonight

    Tonight: Mostly clear, with a low around 29. Blustery, with a northwest wind 17 to 22 mph becoming west 8 to 13 mph in the evening. Winds could gust as high as 33 mph.

    Low: 29 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 62. West wind 7 to 16 mph becoming east in the afternoon. Winds could gust as high as 22 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Breezy, with an east wind 17 to 25 mph becoming south after midnight. Winds could gust as high as 34 mph.

    Low: 40 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 82. Breezy, with a south wind 17 to 26 mph becoming northwest in the afternoon. Winds could gust as high as 36 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. North wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Southeast wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Breezy, with a southeast wind 18 to 28 mph, with gusts as high as 36 mph.

    Low: 59 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A slight chance of showers after noon. Mostly sunny, with a high near 89. Windy, with a south wind 28 to 34 mph, with gusts as high as 43 mph.

    High: 89 °F

    Windy. Mostly
    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 51. Breezy.

    Low: 51 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Blustery, with a northwest wind 17 to 22 mph becoming west 8 to 13 mph in the evening. Winds could gust as high as 33 mph.
Sunday
Sunny, with a high near 62. West wind 7 to 16 mph becoming east in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 40. Breezy, with an east wind 17 to 25 mph becoming south after midnight. Winds could gust as high as 34 mph.
Monday
Sunny, with a high near 82. Breezy, with a south wind 17 to 26 mph becoming northwest in the afternoon. Winds could gust as high as 36 mph.
Monday Night
Mostly clear, with a low around 44. North wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 85. Southeast wind 7 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 59. Breezy, with a southeast wind 18 to 28 mph, with gusts as high as 36 mph.
Wednesday
A slight chance of showers after noon. Mostly sunny, with a high near 89. Windy, with a south wind 28 to 34 mph, with gusts as high as 43 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 51. Breezy.
Thursday
A chance of showers, mainly after noon. Mostly sunny, with a high near 65. Very windy.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 31. Very windy.
Friday
Mostly sunny, with a high near 52. Windy.
Friday Night
A slight chance of rain and snow showers. Partly cloudy, with a low around 30. Blustery.
Saturday
A slight chance of rain and snow showers. Mostly sunny, with a high near 52. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Valley SD
 43.45°N 101.49°W (Elev. 2700 ft)
Last Update:
5:01 pm MDT Apr 18, 2026
Forecast Valid:
5pm MDT Apr 18, 2026-6pm MDT Apr 25, 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