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

Hazardous Weather Outlook

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

66°F

19°C

Humidity	100%
Wind Speed	W 8 mph
Barometer	29.98 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	18 Aug 6:35 am CDT

More Information:

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

Extended Forecast for

9 Miles SE Fort Thompson SD

Today
High: 90 °F
Hot
Tonight
Low: 66 °F
Slight Chance
T-storms
Tuesday
High: 91 °F
Hot
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 90 °F
Hot
Wednesday Night
Low: 67 °F
Mostly Clear
Thursday
High: 95 °F
Hot
Thursday Night
Low: 63 °F
Chance
T-storms
Friday
High: 83 °F
Slight Chance
Showers then
Slight Chance
T-storms

Detailed Forecast

Today

Sunny and hot, with a high near 90. Calm wind becoming north northeast 5 to 7 mph in the morning.

Tonight

A slight chance of showers and thunderstorms, mainly between 2am and 3am. Partly cloudy, with a low around 66. East wind 5 to 8 mph. Chance of precipitation is 20%.

Tuesday

Sunny and hot, with a high near 91. East southeast wind 5 to 9 mph.

Tuesday Night

Mostly clear, with a low around 66. East wind 7 to 10 mph.

Wednesday

Sunny and hot, with a high near 90. Southeast wind 7 to 14 mph, with gusts as high as 22 mph.

Wednesday Night

Mostly clear, with a low around 67. Southeast wind around 14 mph, with gusts as high as 22 mph.

Thursday

Sunny and hot, with a high near 95. South southeast wind 11 to 15 mph, with gusts as high as 23 mph.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 63. South southeast wind 10 to 14 mph becoming north after midnight. Chance of precipitation is 40%.

Friday

A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. North wind 10 to 13 mph. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 58.

Saturday

Sunny, with a high near 78.

Saturday Night

Mostly clear, with a low around 54.

Sunday

Mostly sunny, with a high near 76.