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

Severe Thunderstorms and Heavy Rain in the Mississippi Valley; Critical Fire Weather in the Southern Plains

Severe thunderstorms will persist tonight across the Middle Mississippi Valley, producing damaging winds, large to very large hail and several tornadoes. Low humidity and windy conditions will continue to produce elevated to critical fire weather conditions across the southern High Plains into midweek. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

37°F

3°C

Humidity 79%
Wind Speed NW 12 mph
Barometer 29.96 in (1015.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 28 Apr 1:53 am CDT
Extended Forecast for

Clark SDSimilar City Names

  • Overnight

    Overnight: Mostly clear, with a low around 28. Northwest wind around 11 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 49. Northwest wind 9 to 11 mph.

    High: 49 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, mainly after 7am. Mostly sunny, with a high near 53. Southwest wind 6 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 50%.

    High: 53 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 31. North northwest wind 8 to 11 mph becoming east northeast after midnight. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after 1pm. Mostly sunny, with a high near 49. North northeast wind 7 to 14 mph. Chance of precipitation is 20%.

    High: 49 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. North wind 6 to 11 mph becoming east after midnight.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 54. Northeast wind 6 to 10 mph becoming north northwest in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. North wind 6 to 8 mph becoming south southeast after midnight.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 28. Northwest wind around 11 mph.
Tuesday
Increasing clouds, with a high near 49. Northwest wind 9 to 11 mph.
Tuesday Night
A slight chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 20%.
Wednesday
A chance of showers, mainly after 7am. Mostly sunny, with a high near 53. Southwest wind 6 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 31. North northwest wind 8 to 11 mph becoming east northeast after midnight. Chance of precipitation is 20%.
Thursday
A slight chance of showers after 1pm. Mostly sunny, with a high near 49. North northeast wind 7 to 14 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 31. North wind 6 to 11 mph becoming east after midnight.
Friday
Mostly sunny, with a high near 54. Northeast wind 6 to 10 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 33. North wind 6 to 8 mph becoming south southeast after midnight.
Saturday
Sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.
Monday
A slight chance of showers. Mostly sunny, with a high near 63. Breezy. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clark SDSimilar City Names
 44.88°N 97.75°W (Elev. 1808 ft)
Last Update:
1:31 am CDT Apr 28, 2026
Forecast Valid:
2am CDT Apr 28, 2026-6pm CDT May 4, 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