Air Quality Concerns; Fire Weather; Extreme Heat; Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin. Heavy rainfall and flash flooding possible for the Southeast through Monday. For Hawaii, gusty trade winds a drier weather could result in any fires that start to spread rapidly. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

64°F

18°C

Humidity	87%
Wind Speed	S 7 mph
Barometer	30.04 in (1016.6 mb)
Dewpoint	60°F (16°C)
Visibility	8.00 mi
Last update	3 Aug 11:53 pm CDT

More Information:

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

Extended Forecast for

Castlewood SD

Overnight
Low: 61 °F
Slight Chance
T-storms
Monday
High: 74 °F
Chance
Showers then
Chance
T-storms
Monday Night
Low: 61 °F
Chance
T-storms
Tuesday
High: 78 °F
Mostly Sunny
Tuesday Night
Low: 65 °F
Chance
T-storms then
Showers
Likely
Wednesday
High: 83 °F
Slight Chance
T-storms then
Slight Chance
Showers
Wednesday Night
Low: 67 °F
Partly Cloudy
then Slight
Chance
T-storms
Thursday
High: 87 °F
Mostly Sunny
Thursday Night
Low: 69 °F
Chance
T-storms

Detailed Forecast

Overnight

A slight chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 61. South southeast wind around 8 mph. Chance of precipitation is 20%.

Monday

A chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 74. South wind 8 to 11 mph. Chance of precipitation is 40%.

Monday Night

A chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 61. South southeast wind around 10 mph. Chance of precipitation is 40%.

Tuesday

Mostly sunny, with a high near 78. South southeast wind 10 to 18 mph, with gusts as high as 29 mph.

Tuesday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southeast wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 83. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South wind 6 to 8 mph. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 87. South wind 6 to 11 mph, with gusts as high as 20 mph.

Thursday Night

A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. South southeast wind around 10 mph. Chance of precipitation is 30%.

Friday

Mostly sunny, with a high near 87.

Friday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

Saturday

A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.

Sunday

A slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 20%.