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.

Mostly Cloudy

70°F

21°C

Humidity	84%
Wind Speed	E 15 mph
Barometer	29.90 in (1011.5 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	15 Aug 8:53 am CDT

More Information:

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

Extended Forecast for

4 Miles W Castlewood SD

Today
High: 85 °F
Slight Chance
T-storms
Tonight
Low: 67 °F
Chance
T-storms
Saturday
High: 81 °F
Chance
T-storms
Saturday Night
Low: 66 °F
T-storms
Likely
Sunday
High: 80 °F
Chance
T-storms
Sunday Night
Low: 64 °F
Chance
T-storms then
Chance
Showers
Monday
High: 81 °F
Mostly Sunny
Monday Night
Low: 63 °F
Partly Cloudy
Tuesday
High: 82 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers and thunderstorms before 5pm. Partly sunny, with a high near 85. Light east southeast wind becoming east northeast 5 to 10 mph in the morning. Chance of precipitation is 20%.

Tonight

A chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 67. East northeast wind 8 to 10 mph. Chance of precipitation is 40%.

Saturday

A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 81. East wind 9 to 13 mph. Chance of precipitation is 30%.

Saturday Night

Showers and thunderstorms likely, mainly between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 66. East northeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

A chance of showers and thunderstorms. Partly sunny, with a high near 80. East wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 64. 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 81. Northeast wind 6 to 9 mph.

Monday Night

Partly cloudy, with a low around 63. East northeast wind 6 to 8 mph.

Tuesday

Mostly sunny, with a high near 82. Northeast wind 6 to 8 mph.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

Sunny, with a high near 83.

Wednesday Night

Mostly clear, with a low around 63.