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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Rain and Breezy

61°F

16°C

Humidity 93%
Wind Speed NE 23 G 39 mph
Barometer 29.90 in (1011.8 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 31 Jul 6:53 am CDT
Extended Forecast for

Goodwin SD

  • Today

    Today: Showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Patchy smoke before noon. High near 73. Breezy, with a north northeast wind 15 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Breezy.
    Showers then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy smoke before 9pm. Partly cloudy, with a low around 58. North wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Patchy Smoke
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. North northeast wind 7 to 10 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. Light and variable wind becoming south around 6 mph after midnight.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 80. South wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. South wind 15 to 18 mph, with gusts as high as 31 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. Breezy, with a south wind 18 to 20 mph, with gusts as high as 31 mph.

    High: 82 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. South wind 11 to 16 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, mainly before 1pm. Partly sunny, with a high near 68. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

Today
Showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Patchy smoke before noon. High near 73. Breezy, with a north northeast wind 15 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Patchy smoke before 9pm. Partly cloudy, with a low around 58. North wind 8 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 78. North northeast wind 7 to 10 mph.
Saturday Night
Clear, with a low around 59. Light and variable wind becoming south around 6 mph after midnight.
Sunday
Sunny, with a high near 80. South wind 8 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 64. South wind 15 to 18 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 82. Breezy, with a south wind 18 to 20 mph, with gusts as high as 31 mph.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. South wind 11 to 16 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Tuesday
A chance of showers, mainly before 1pm. Partly sunny, with a high near 68. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Goodwin SD
 44.87°N 96.84°W (Elev. 1991 ft)
Last Update:
7:31 am CDT Jul 31, 2026
Forecast Valid:
7am CDT Jul 31, 2026-6pm CDT Aug 6, 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