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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

81°F

27°C

Humidity 51%
Wind Speed SE 14 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 28 Aug 4:53 pm CDT
Extended Forecast for

Goodwin SD

  • This Afternoon

    This Afternoon: A slight chance of showers. Partly sunny, with a high near 83. South wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 85. South southeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 65. East wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 87. East southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    High: 87 °F

    Slight Chance
    T-storms then
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. South southeast wind 7 to 9 mph becoming west after midnight.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83. Northwest wind 8 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. West northwest wind around 6 mph becoming east southeast in the evening.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. East northeast wind 5 to 9 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers. Partly sunny, with a high near 83. South wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 85. South southeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 65. East wind 6 to 8 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 87. East southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Sunday Night
Partly cloudy, with a low around 67. South southeast wind 7 to 9 mph becoming west after midnight.
Monday
Mostly sunny, with a high near 83. Northwest wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 62. West northwest wind around 6 mph becoming east southeast in the evening.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. East northeast wind 5 to 9 mph becoming south in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Goodwin SD
 44.87°N 96.84°W (Elev. 1991 ft)
Last Update:
4:06 pm CDT Aug 28, 2026
Forecast Valid:
5pm CDT Aug 28, 2026-6pm CDT Sep 4, 2026
 
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