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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

74°F

23°C

Humidity 85%
Wind Speed S 10 mph
Barometer 29.96 in (1013.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 30 Jul 12:53 am CDT
Extended Forecast for

Hazel SD

  • Overnight

    Overnight: Patchy smoke. Mostly cloudy, with a low around 70. South southeast wind around 10 mph.

    Low: 70 °F

    Patchy Smoke

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 81. South wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

    High: 81 °F

    Chance
    T-storms then
    Heavy Rain

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a slight chance of showers after 4am. Some of the storms could produce heavy rainfall. Low around 62. North wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Heavy Rain
    then Showers
    Likely

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 80. North wind around 17 mph, with gusts as high as 28 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. North wind 5 to 11 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. North wind around 6 mph becoming south in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 62. South wind 5 to 9 mph.

    Low: 62 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Breezy, with a south wind 11 to 21 mph, with gusts as high as 29 mph.

    High: 82 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. Breezy, with a south wind around 21 mph, with gusts as high as 31 mph.

    Low: 66 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Overnight
Patchy smoke. Mostly cloudy, with a low around 70. South southeast wind around 10 mph.
Thursday
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 81. South wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a slight chance of showers after 4am. Some of the storms could produce heavy rainfall. Low around 62. North wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 80. North wind around 17 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 59. North wind 5 to 11 mph.
Saturday
Sunny, with a high near 82. North wind around 6 mph becoming south in the afternoon.
Saturday Night
Clear, with a low around 62. South wind 5 to 9 mph.
Sunday
Sunny, with a high near 82. Breezy, with a south wind 11 to 21 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 66. Breezy, with a south wind around 21 mph, with gusts as high as 31 mph.
Monday
Mostly sunny, with a high near 84. Windy.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Breezy. Chance of precipitation is 50%.
Tuesday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Hazel SD
 44.76°N 97.38°W (Elev. 1785 ft)
Last Update:
12:36 am CDT Jul 30, 2026
Forecast Valid:
1am CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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