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

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fog/Mist

69°F

21°C

Humidity	100%
Wind Speed	Calm
Barometer	29.90 in (1011.6 mb)
Dewpoint	69°F (21°C)
Visibility	0.75 mi
Last update	18 Aug 2:53 am CDT

More Information:

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

Extended Forecast for

Vienna SD

Dense Fog Advisory until August 18, 09:00am

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until August 18, 09:00am
NOW until 9:00am Mon
Dense Fog Advisory
Overnight
Low: 71 °F
Patchy Fog
Monday
High: 84 °F
Areas Fog
then Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 64 °F
Mostly Clear
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 64 °F
Mostly Clear
Thursday
High: 86 °F
Sunny

Detailed Forecast

Overnight

Patchy fog after 5am. Otherwise, mostly cloudy, with a steady temperature around 71. South wind 3 to 5 mph.

Monday

Areas of fog between 7am and 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 6 to 8 mph becoming north in the afternoon.

Monday Night

Partly cloudy, with a low around 66. North wind around 6 mph becoming east after midnight.

Tuesday

Mostly sunny, with a high near 84. East wind around 7 mph.

Tuesday Night

Mostly clear, with a low around 64. East wind 6 to 8 mph.

Wednesday

Sunny, with a high near 83. Southeast wind 6 to 10 mph.

Wednesday Night

Mostly clear, with a low around 64. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.

Thursday

Sunny, with a high near 86. South wind 13 to 15 mph, with gusts as high as 24 mph.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 62. South wind 9 to 13 mph becoming north northwest after midnight. Chance of precipitation is 50%.

Friday

A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 76. Chance of precipitation is 20%.

Friday Night

Mostly clear, with a low around 55.

Saturday

Sunny, with a high near 71.

Saturday Night

Mostly clear, with a low around 49.

Sunday

Sunny, with a high near 70.