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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Rosebud Sioux Tribal Airport (KSUO)

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

A Few Clouds

48°F

9°C

Humidity 82%
Wind Speed S 15 G 23 mph
Barometer 30.06 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 21 May 1:15 am CDT
Extended Forecast for

Antelope SD

  • Overnight

    Overnight: Partly cloudy, with a low around 40. South wind around 14 mph, with gusts as high as 29 mph.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68. South wind 15 to 18 mph, with gusts as high as 31 mph.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 46. Southeast wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 46 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Rain before 1pm, then a chance of showers, mainly between 1pm and 4pm. High near 58. Breezy, with a southeast wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 58 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 39. Northwest wind 5 to 15 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73. West wind around 7 mph, with gusts as high as 15 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 40. South wind around 14 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 68. South wind 15 to 18 mph, with gusts as high as 31 mph.
Thursday Night
A chance of showers and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 46. Southeast wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Friday
Rain before 1pm, then a chance of showers, mainly between 1pm and 4pm. High near 58. Breezy, with a southeast wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Friday Night
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 39. Northwest wind 5 to 15 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny, with a high near 73. West wind around 7 mph, with gusts as high as 15 mph.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 53.
Memorial Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 57. Breezy.
Tuesday
Mostly sunny, with a high near 86. Windy.
Tuesday Night
Partly cloudy, with a low around 56. Breezy.
Wednesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Antelope SD
 43.31°N 100.62°W (Elev. 2589 ft)
Last Update:
1:31 am CDT May 21, 2026
Forecast Valid:
1am CDT May 21, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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