Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

78°F

26°C

Humidity	42%
Wind Speed	Vrbl 7 mph
Barometer	30.08 in (1018.3 mb)
Dewpoint	53°F (12°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	27 Aug 5:53 pm CDT

More Information:

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

Extended Forecast for

Watertown SD

Tonight
Low: 56 °F
Mostly Clear
Friday
High: 83 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 65 °F
Chance
T-storms then
Showers
Likely
Saturday
High: 85 °F
Gradual
Clearing
Saturday Night
Low: 67 °F
Partly Cloudy
Sunday
High: 86 °F
Mostly Sunny
Sunday Night
Low: 66 °F
Slight Chance
T-storms
Monday
High: 83 °F
Mostly Sunny
Monday Night
Low: 62 °F
Slight Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 56. Light and variable wind becoming east around 6 mph in the evening.

Friday

A slight chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 83. South wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

Friday Night

A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 65. South wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday

Cloudy through mid morning, then gradual clearing, with a high near 85. South wind 8 to 14 mph, with gusts as high as 24 mph.

Saturday Night

Partly cloudy, with a low around 67. East wind around 8 mph.

Sunday

Mostly sunny, with a high near 86. East northeast wind 8 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. Southeast wind 5 to 9 mph becoming west northwest after midnight. Chance of precipitation is 20%.

Monday

Mostly sunny, with a high near 83. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. North northwest wind 5 to 7 mph becoming south southeast after midnight. Chance of precipitation is 20%.

Tuesday

A slight chance of showers after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.

Tuesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near 84.

Wednesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Thursday

A slight chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 20%.