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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

62°F

17°C

Humidity 75%
Wind Speed SE 5 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 26 Jun 1:53 am CDT
Extended Forecast for

Wallace SD

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 60. Light east southeast wind.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 78. South southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64. Southeast wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 3pm. Mostly sunny, with a high near 82. Breezy, with a south southeast wind 18 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.

    High: 82 °F

    Breezy.
    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 93. Southeast wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Southeast wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. Breezy, with a south southeast wind 14 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. Southwest wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 60. Light east southeast wind.
Friday
A slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 78. South southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 64. Southeast wind 13 to 16 mph, with gusts as high as 26 mph.
Saturday
A chance of showers, mainly after 3pm. Mostly sunny, with a high near 82. Breezy, with a south southeast wind 18 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 93. Southeast wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 73. Southeast wind 8 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny and hot, with a high near 95. Breezy, with a south southeast wind 14 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.
Monday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. Southwest wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Sunny and hot, with a high near 90. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
A chance of showers. Mostly sunny and hot, with a high near 93. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Wallace SD
 45.07°N 97.48°W (Elev. 1814 ft)
Last Update:
2:36 am CDT Jun 26, 2026
Forecast Valid:
2am CDT Jun 26, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation