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

Areas of Excessive Rainfall and Severe Thunderstorms; Typhoon Watch for Guam/CNMI

Heavy to excessive rainfall will continue today from the Texas Big Bend region into southern Oklahoma. Locally considerable flash and urban flooding is possible, and river flooding will continue in central Oklahoma. Scattered severe thunderstorms are possible in parts of the Mid-Atlantic Friday. A Typhoon Watch has been issued for Guam and CNMI. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Mostly Cloudy

49°F

9°C

Humidity 90%
Wind Speed W 8 mph
Barometer 30.06 in (1018.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 15 Oct 11:53 am CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 49. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 38 mph.

    High: 49 °F

    Cloudy and
    Breezy

  • Tonight

    Tonight: A chance of showers, mainly before 3am. Cloudy, with a low around 37. Breezy, with a northwest wind 23 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 40%.

    Low: 37 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 46. Breezy, with a north northwest wind 21 to 26 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 46 °F

    Decreasing
    Clouds and
    Breezy then
    Sunny

  • Friday Night

    Friday Night: Widespread frost between 9pm and 2am. Otherwise, clear, with a low around 33. Light and variable wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 22 mph.

    Low: 33 °F

    Frost

  • Saturday

    Saturday: Sunny, with a high near 59. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 36 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. Breezy, with a south southwest wind 17 to 20 mph, with gusts as high as 32 mph.

    Low: 44 °F

    Clear and
    Breezy then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. North northeast wind around 5 mph.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 64. East wind 5 to 8 mph.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 49. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 38 mph.
Tonight
A chance of showers, mainly before 3am. Cloudy, with a low around 37. Breezy, with a northwest wind 23 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 40%.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 46. Breezy, with a north northwest wind 21 to 26 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
Widespread frost between 9pm and 2am. Otherwise, clear, with a low around 33. Light and variable wind becoming south southwest 9 to 14 mph in the evening. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 59. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 36 mph.
Saturday Night
Mostly clear, with a low around 44. Breezy, with a south southwest wind 17 to 20 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 66. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 41. North northeast wind around 5 mph.
Monday
Sunny, with a high near 64. East wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.17°W (Elev. 1755 ft)
Last Update:
12:21 pm CDT Oct 15, 2026
Forecast Valid:
12pm CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation