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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Mobridge, Mobridge Municipal Airport (KMBG)

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

Fair

74°F

23°C

Humidity 91%
Wind Speed NE 6 mph
Barometer 29.86 in (1010.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 8:52 pm CDT
Extended Forecast for

Hosmer SD

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Calm wind becoming north northwest 5 to 9 mph after midnight.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: Cloudy through mid morning, then becoming mostly sunny, with a high near 83. North wind around 9 mph becoming east northeast in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. South wind 6 to 8 mph becoming east in the evening.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. East southeast wind 6 to 9 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. East southeast wind 8 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. South southeast wind 8 to 18 mph.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. South southeast wind 15 to 17 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. South southeast wind 14 to 16 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 59. North wind 11 to 15 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. Calm wind becoming north northwest 5 to 9 mph after midnight.
Monday
Cloudy through mid morning, then becoming mostly sunny, with a high near 83. North wind around 9 mph becoming east northeast in the afternoon.
Monday Night
Partly cloudy, with a low around 63. South wind 6 to 8 mph becoming east in the evening.
Tuesday
Sunny, with a high near 84. East southeast wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 63. East southeast wind 8 to 10 mph.
Wednesday
Sunny, with a high near 87. South southeast wind 8 to 18 mph.
Wednesday Night
Mostly clear, with a low around 65. South southeast wind 15 to 17 mph.
Thursday
Sunny, with a high near 88. South southeast wind 14 to 16 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. North wind 11 to 15 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hosmer SD
 45.57°N 99.5°W (Elev. 1857 ft)
Last Update:
8:48 pm CDT Aug 17, 2025
Forecast Valid:
9pm CDT Aug 17, 2025-6pm CDT Aug 24, 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