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

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Overcast

60°F

16°C

Humidity 93%
Wind Speed NE 16 G 23 mph
Barometer 29.94 in (1013.0 mb)
Dewpoint 58°F (14°C)
Visibility 7.00 mi
Last update 16 Jul 1:53 am CDT
Extended Forecast for

Wallace SD

  • Overnight

    Overnight: A slight chance of showers after 3am. Cloudy, with a low around 57. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Cloudy, with a high near 64. North northeast wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50. North wind 7 to 17 mph, with gusts as high as 26 mph.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. North northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. South southeast wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 75. South wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. South southeast wind 7 to 10 mph becoming north northeast after midnight. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 77. North northeast wind 8 to 10 mph.

    High: 77 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. Northeast wind 7 to 10 mph.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers after 3am. Cloudy, with a low around 57. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Cloudy, with a high near 64. North northeast wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Wednesday Night
Mostly cloudy, with a low around 50. North wind 7 to 17 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 70. North northeast wind 6 to 8 mph becoming southeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 56. South southeast wind 9 to 11 mph, with gusts as high as 20 mph.
Friday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 75. South wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. South southeast wind 7 to 10 mph becoming north northeast after midnight. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 77. North northeast wind 8 to 10 mph.
Saturday Night
Partly cloudy, with a low around 60. Northeast wind 7 to 10 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 40%.
Monday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wallace SD
 45.07°N 97.48°W (Elev. 1814 ft)
Last Update:
1:46 am CDT Jul 16, 2025
Forecast Valid:
2am CDT Jul 16, 2025-6pm CDT Jul 22, 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