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

Storms and Heavy Rainfall in the Plains and Southern Appalachians; Hazardous Heat in the South and Southeast

Severe thunderstorms with heavy rainfall will be possible across the southern Appalachians through this evening. Thunderstorms are also expected from the northern/central Plains into portions of the Midwest through Tuesday, and severe storms may produce large hail and damaging wind gusts. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

BRITTON (KBTN)

Lat: 45.82°NLon: 97.74°WElev: 1318ft.

Fair

79°F

26°C

Humidity 74%
Wind Speed SW 5 mph
Barometer 29.90 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 17 Aug 7:35 pm CDT
Extended Forecast for

Amherst SD

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 58. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 79. North northeast wind 5 to 7 mph.

    High: 79 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. North wind 5 to 7 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 80 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind 6 to 8 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. South southwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. Northwest wind 5 to 9 mph becoming south in the evening.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 83. North northwest wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. North northeast wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 58. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 30%.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 79. North northeast wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 53. North wind 5 to 7 mph becoming calm in the evening.
Wednesday
A slight chance of showers after 1pm. Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 59. South wind 6 to 8 mph.
Thursday
Sunny, with a high near 84. South southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 59. Northwest wind 5 to 9 mph becoming south in the evening.
Friday
Mostly sunny, with a high near 83. North northwest wind 5 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 56. North northeast wind 5 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 81.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Amherst SD
 45.73°N 97.92°W (Elev. 1302 ft)
Last Update:
7:36 pm CDT Aug 17, 2026
Forecast Valid:
7pm CDT Aug 17, 2026-6pm CDT Aug 24, 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