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.

Overcast

73°F

23°C

Humidity 90%
Wind Speed E 13 G 20 mph
Barometer 29.84 in (1009.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Aug 2:52 am CDT
Extended Forecast for

Herreid SD

Severe T-storm Watch until August 17, 07:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 17, 07:00am

    NOW until 7:00am Sun

    Severe T-storm Watch

  • Overnight

    Low: 69 °F

    Severe
    Thunderstorms
    and Breezy

  • Sunday

    Sunday: Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Some of the storms could be severe and produce heavy rainfall. High near 82. East southeast wind 10 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 63. North wind 6 to 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 85. North wind around 7 mph.

    High: 85 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. East southeast wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 86. Southeast wind 5 to 8 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. East southeast wind around 8 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. South southeast wind 7 to 15 mph.

    High: 90 °F

    Hot

Detailed Forecast

Overnight
Showers and thunderstorms before 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe and produce heavy rainfall. Steady temperature around 69. Breezy, with an east northeast wind around 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Some of the storms could be severe and produce heavy rainfall. High near 82. East southeast wind 10 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Mostly cloudy, with a low around 63. North wind 6 to 10 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 85. North wind around 7 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. East southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 86. Southeast wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 63. East southeast wind around 8 mph.
Wednesday
Sunny and hot, with a high near 90. South southeast wind 7 to 15 mph.
Wednesday Night
Mostly clear, with a low around 66. Southeast wind around 14 mph, with gusts as high as 22 mph.
Thursday
Sunny and hot, with a high near 91.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 59. Chance of precipitation is 30%.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Herreid SD
 45.83°N 100.06°W (Elev. 1696 ft)
Last Update:
2:46 am CDT Aug 17, 2025
Forecast Valid:
3am CDT Aug 17, 2025-6pm CDT Aug 23, 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