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

56°F

13°C

Humidity 87%
Wind Speed W 3 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 25 Jun 1:53 am CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 75. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 75 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. East wind 3 to 8 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers before 10am. Partly sunny, with a high near 79. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Southeast wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 1pm. Partly sunny, with a high near 83. Breezy, with a south southeast wind 16 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    High: 83 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Breezy, with a southeast wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 93. Southeast wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 93 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. South southeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Clear then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 54. Calm wind.
Thursday
Increasing clouds, with a high near 75. North wind 5 to 7 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 55. East wind 3 to 8 mph.
Friday
A slight chance of showers before 10am. Partly sunny, with a high near 79. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 62. Southeast wind 13 to 15 mph, with gusts as high as 25 mph.
Saturday
A slight chance of showers after 1pm. Partly sunny, with a high near 83. Breezy, with a south southeast wind 16 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Breezy, with a southeast wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 93. Southeast wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. South southeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 65.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
2:36 am CDT Jun 25, 2026
Forecast Valid:
3am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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