Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Thunderstorm in Vicinity Rain Fog/Mist

70°F

21°C

Humidity	93%
Wind Speed	E 5 mph
Barometer	30.00 in (1014.9 mb)
Dewpoint	68°F (20°C)
Visibility	5.00 mi
Last update	17 Aug 2:53 pm CDT

More Information:

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

Extended Forecast for

6 Miles ESE Castlewood SD

This Afternoon
High: 77 °F
Chance
T-storms
Tonight
Low: 67 °F
T-storms
Likely then
Chance
T-storms
Monday
High: 82 °F
Patchy Fog
then Mostly
Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 81 °F
Mostly Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 61 °F
Mostly Clear
Thursday
High: 84 °F
Sunny

Detailed Forecast

This Afternoon

A chance of showers and thunderstorms. Partly sunny, with a steady temperature around 77. South southeast wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

Tonight

Showers and thunderstorms likely before 3am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 67. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Monday

Patchy fog before 9am. Otherwise, mostly sunny, with a high near 82. West wind 7 to 9 mph becoming north in the afternoon.

Monday Night

Partly cloudy, with a low around 62. North northeast wind 5 to 8 mph.

Tuesday

Mostly sunny, with a high near 81. Northeast wind 5 to 7 mph.

Tuesday Night

Mostly clear, with a low around 61. East northeast wind 5 to 7 mph becoming calm after midnight.

Wednesday

Sunny, with a high near 82. Calm wind becoming east southeast 5 to 7 mph in the morning.

Wednesday Night

Mostly clear, with a low around 61. South wind around 8 mph.