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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Hettinger, Hettinger Municipal Airport (KHEI)

Lat: 46.01°NLon: 102.65°WElev: 2703ft.

Mostly Cloudy

67°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 29.91 in (1010.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 17 Aug 3:53 am MDT
Extended Forecast for

Bison SD

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 65. East wind around 10 mph, with gusts as high as 15 mph.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 84. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 15 mph.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62. Northeast wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 15 mph.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. East wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 15 mph.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 62. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 65. East wind around 10 mph, with gusts as high as 15 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 84. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 62. Northeast wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 15 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. East wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 15 mph.
Monday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 62. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 90. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 65. Southeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 93. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 90.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 58.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 78.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Saturday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bison SD
 45.52°N 102.48°W (Elev. 2799 ft)
Last Update:
3:49 am MDT Aug 17, 2025
Forecast Valid:
4am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation