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

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

56°F

13°C

Humidity 34%
Wind Speed SE 10 mph
Barometer 29.78 in (1007.9 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 22 Apr 4:53 am CDT
Extended Forecast for

Watertown SD

Red Flag Warning April 22, 12:00pm until April 22, 08:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 89. Breezy, with a south southeast wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 89 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 58. Breezy, with a south wind 21 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Breezy.
    Mostly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy, with a south wind 18 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. West northwest wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 55. West northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. Northwest wind 7 to 14 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers. Mostly sunny, with a high near 58. Northwest wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 38. East wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 54. East wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 89. Breezy, with a south southeast wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.
Tonight
A chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 58. Breezy, with a south wind 21 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy, with a south wind 18 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 36. West northwest wind 15 to 17 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 55. West northwest wind around 15 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 33. Northwest wind 7 to 14 mph.
Saturday
A slight chance of showers. Mostly sunny, with a high near 58. Northwest wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 38. East wind 6 to 9 mph. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 54. East wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
Showers likely. Mostly cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 32. Breezy. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 54. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
4:36 am CDT Apr 22, 2026
Forecast Valid:
5am CDT Apr 22, 2026-6pm CDT Apr 28, 2026
 
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