Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

78°F

26°C

Humidity	90%
Wind Speed	S 7 mph
Barometer	29.71 in (1004.9 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	30 Aug 8:53 pm CDT

More Information:

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

Extended Forecast for

Clark SD

Tonight
Low: 63 °F
Partly Cloudy
Monday
High: 81 °F
Becoming
Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 80 °F
Mostly Cloudy
then Slight
Chance
Showers
Tuesday Night
Low: 62 °F
Showers
Likely
Wednesday
High: 81 °F
Mostly Sunny
Wednesday Night
Low: 65 °F
Slight Chance
T-storms
Thursday
High: 84 °F
Mostly Sunny
Thursday Night
Low: 66 °F
Mostly Clear

Detailed Forecast

Tonight

Partly cloudy, with a low around 63. Light and variable wind becoming north northwest 6 to 11 mph after midnight. Winds could gust as high as 20 mph.

Monday

Partly sunny, then gradually becoming sunny, with a high near 81. North northwest wind 6 to 10 mph.

Monday Night

Partly cloudy, with a low around 62. West southwest wind around 6 mph becoming south southeast after midnight.

Tuesday

A slight chance of showers after 1pm. Mostly cloudy, with a high near 80. Light and variable wind becoming east southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.

Tuesday Night

Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. East wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Mostly sunny, with a high near 81. Southeast wind around 10 mph.

Wednesday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 65. East southeast wind 10 to 13 mph. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 84. Southeast wind 10 to 13 mph.

Thursday Night

Mostly clear, with a low around 66. Southeast wind around 9 mph.

Friday

Sunny, with a high near 85.

Friday Night

Mostly clear, with a low around 67.