Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fog/Mist

71°F

22°C

Humidity	96%
Wind Speed	SE 3 mph
Barometer	29.92 in (1012.0 mb)
Dewpoint	70°F (21°C)
Visibility	4.00 mi
Last update	15 Aug 6:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles NW Watertown Municipal Airport SD

Today
High: 82 °F
Slight Chance
T-storms
Tonight
Low: 67 °F
Slight Chance
T-storms then
Chance
T-storms
Saturday
High: 78 °F
Chance
T-storms
Saturday Night
Low: 65 °F
T-storms
Likely
Sunday
High: 77 °F
Chance
T-storms
Sunday Night
Low: 63 °F
Chance
Showers
Monday
High: 78 °F
Mostly Sunny
Monday Night
Low: 63 °F
Partly Cloudy
Tuesday
High: 80 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers and thunderstorms, mainly between noon and 2pm. Partly sunny, with a high near 82. East northeast wind 7 to 10 mph. Chance of precipitation is 20%.

Tonight

A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. East northeast wind 8 to 10 mph. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. East northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Saturday Night

Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 65. East northeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Sunday

A chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East northeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

Monday

Mostly sunny, with a high near 78. Northeast wind 6 to 8 mph.

Monday Night

Partly cloudy, with a low around 63. East northeast wind 5 to 8 mph.

Tuesday

Mostly sunny, with a high near 80. Northeast wind 5 to 8 mph.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

Sunny, with a high near 81.

Wednesday Night

Mostly clear, with a low around 63.