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.

Overcast

49°F

9°C

Humidity 55%
Wind Speed N 9 mph
Barometer 30.20 in (1023.8 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 19 May 7:53 pm CDT
Extended Forecast for

Webster SD

Freeze Warning May 20, 01:00am until May 20, 08:00am
Click here for hazard details and duration
Freeze Warning

  • Tonight

    Tonight: Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 31. North northwest wind around 6 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 61. South wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 61 °F

    Frost then
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40. South southeast wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 65. South southeast wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. Southeast wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 58. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 42. East southeast wind 6 to 10 mph. Chance of precipitation is 50%.

    Low: 42 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 1pm. Partly sunny, with a high near 66. South southeast wind 6 to 8 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. West wind 5 to 7 mph becoming southeast in the evening.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 31. North northwest wind around 6 mph becoming calm in the evening.
Wednesday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 61. South wind 6 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 40. South southeast wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 65. South southeast wind 11 to 16 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 42. Southeast wind 11 to 14 mph, with gusts as high as 23 mph.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 58. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers. Mostly cloudy, with a low around 42. East southeast wind 6 to 10 mph. Chance of precipitation is 50%.
Saturday
A slight chance of showers before 1pm. Partly sunny, with a high near 66. South southeast wind 6 to 8 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 45. West wind 5 to 7 mph becoming southeast in the evening.
Sunday
Sunny, with a high near 77.
Sunday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 51. Chance of precipitation is 20%.
Memorial Day
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Webster SD
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
7:36 pm CDT May 19, 2026
Forecast Valid:
8pm CDT May 19, 2026-6pm CDT May 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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