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

Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

68°F

20°C

Humidity 70%
Wind Speed W 3 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Aug 8:53 pm CDT
Extended Forecast for

4 Miles WSW Bryant SD

  • Tonight

    Tonight: Clear, with a low around 56. Calm wind becoming southeast around 6 mph after midnight.

    Low: 56 °F

    Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 82. South southeast wind 6 to 16 mph. Chance of precipitation is 10%.

    High: 82 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 65. South southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 84. South wind around 18 mph, with gusts as high as 28 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. South southeast wind 10 to 14 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 85. Southeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 85 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind 10 to 13 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. East wind 10 to 13 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind 10 to 13 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 56. Calm wind becoming southeast around 6 mph after midnight.
Wednesday
A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 82. South southeast wind 6 to 16 mph. Chance of precipitation is 10%.
Wednesday Night
A chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 65. South southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 84. South wind around 18 mph, with gusts as high as 28 mph.
Thursday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. South southeast wind 10 to 14 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 85. Southeast wind 9 to 11 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind 10 to 13 mph. Chance of precipitation is 40%.
Saturday
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. East wind 10 to 13 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind 10 to 13 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Bryant SD
 44.56°N 97.53°W (Elev. 1749 ft)
Last Update:
8:46 pm CDT Aug 12, 2025
Forecast Valid:
9pm CDT Aug 12, 2025-6pm CDT Aug 19, 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