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.

A Few Clouds

43°F

6°C

Humidity 74%
Wind Speed Calm
Barometer 30.24 in (1025.2 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 19 May 10:53 pm CDT
Extended Forecast for

9 Miles S Ortley 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 1am. Otherwise, mostly clear, with a low around 32. Light and variable wind.

    Low: 32 °F

    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 wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. South southeast wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. Southeast wind 10 to 15 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 57. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Saturday

    Saturday: A slight chance of showers before 1pm. Mostly cloudy, with a high near 67. South southeast wind 6 to 8 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. West northwest wind 5 to 7 mph becoming southeast in the evening.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy frost after 1am. Otherwise, mostly clear, with a low around 32. Light and variable wind.
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 wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 65. South southeast wind 10 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Partly cloudy, with a low around 41. Southeast wind 10 to 15 mph.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 57. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday
A slight chance of showers before 1pm. Mostly cloudy, with a high near 67. 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 44. West northwest wind 5 to 7 mph becoming southeast in the evening.
Sunday
Mostly sunny, with a high near 78.
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 83.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
Last Update:
10:31 pm CDT May 19, 2026
Forecast Valid:
11pm CDT May 19, 2026-6pm CDT May 26, 2026
 
Forecast Discussion
 
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Additional Resources

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