Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Plains and Mississippi Valley

A heat wave over the Southwest will intensify late week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rain are expected over portions of the Plains and Mississippi Valley tonight, which will shift to parts of the Upper Midwest and mid-Mississippi Valley Friday. Monsoonal showers and flooding persist in the Desert Southwest. 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

71°F

22°C

Humidity	96%
Wind Speed	SE 17 G 29 mph
Barometer	29.83 in (1009.0 mb)
Dewpoint	70°F (21°C)
Visibility	3.00 mi
Last update	30 Jul 8:53 pm CDT

More Information:

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

Extended Forecast for

Watertown SD

Tonight
Low: 62 °F
T-storms
Likely then
Showers
Friday
High: 77 °F
Chance
Showers and
Breezy then
Patchy Smoke
Friday Night
Low: 57 °F
Mostly Clear
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 60 °F
Clear
Sunday
High: 82 °F
Sunny
Sunday Night
Low: 64 °F
Mostly Clear
Monday
High: 83 °F
Mostly Sunny
then Sunny
and Breezy
Monday Night
Low: 59 °F
Chance
T-storms and
Breezy

Detailed Forecast

Tonight

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 62. East wind 7 to 16 mph becoming north northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 11am. Patchy smoke between 11am and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 77. Breezy, with a north northeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

Friday Night

Mostly clear, with a low around 57. North wind 6 to 11 mph, with gusts as high as 21 mph.

Saturday

Sunny, with a high near 80. North northeast wind 5 to 7 mph.

Saturday Night

Clear, with a low around 60. South wind around 6 mph.

Sunday

Sunny, with a high near 82. South wind 8 to 17 mph, with gusts as high as 28 mph.

Sunday Night

Mostly clear, with a low around 64. South wind around 18 mph, with gusts as high as 31 mph.

Monday

Mostly sunny, with a high near 83. Breezy, with a south wind 18 to 20 mph, with gusts as high as 32 mph.

Monday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Breezy, with a south wind 11 to 20 mph becoming north after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 50%.

Tuesday

A chance of showers before 1pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.

Tuesday Night

Mostly clear, with a low around 54.

Wednesday

Mostly sunny, with a high near 75.

Wednesday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 80.