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

Mobridge, Mobridge Municipal Airport (KMBG)

Lat: 45.55°NLon: 100.41°WElev: 1713ft.

Fair

82°F

28°C

Humidity 65%
Wind Speed SE 13 mph
Barometer 29.92 in (1012.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 15 Aug 5:52 pm CDT
Extended Forecast for

4 Miles N Hosmer SD

  • Tonight

    Tonight: A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 63. East wind 9 to 18 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Breezy, with an east wind 17 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Breezy, with an east wind 16 to 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. East wind around 15 mph. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. East northeast wind 9 to 14 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 79. Northeast wind 8 to 10 mph.

    High: 79 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. East wind 7 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. East wind 7 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. East wind 7 to 10 mph.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 63. East wind 9 to 18 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Breezy, with an east wind 17 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Breezy, with an east wind 16 to 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. East wind around 15 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. East northeast wind 9 to 14 mph. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 79. Northeast wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 62. East wind 7 to 10 mph.
Tuesday
Mostly sunny, with a high near 84. East wind 7 to 10 mph.
Tuesday Night
Mostly clear, with a low around 63. East wind 7 to 10 mph.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 40%.
Friday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Hosmer SD
 45.64°N 99.47°W (Elev. 1900 ft)
Last Update:
5:46 pm CDT Aug 15, 2025
Forecast Valid:
5pm CDT Aug 15, 2025-6pm CDT Aug 22, 2025
 
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