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

78°F

26°C

Humidity 43%
Wind Speed Vrbl 5 mph
Barometer 29.83 in (1009.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 4:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 58. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 76. North northwest wind 5 to 9 mph.

    High: 76 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Northwest wind 6 to 8 mph becoming south southwest after midnight.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 85. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 65. South southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 89. South wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. South southeast wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny and hot, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 93 °F

    Hot

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 58. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 76. North northwest wind 5 to 9 mph.
Wednesday Night
Mostly clear, with a low around 57. Northwest wind 6 to 8 mph becoming south southwest after midnight.
Juneteenth
Sunny, with a high near 85. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. South southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 89. South wind 10 to 16 mph, with gusts as high as 28 mph.
Friday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. South southeast wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 89. Breezy.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Cloudy, with a high near 65. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.17°W (Elev. 1755 ft)
Last Update:
5:48 pm CDT Jun 17, 2025
Forecast Valid:
5pm CDT Jun 17, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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