US National Weather Service Sioux Falls South Dakota

US National Weather Service Sioux Falls South Dakota Official page for the National Weather Service Sioux Falls. Details: weather.gov/facebook

NWS will be using Facebook as a supplemental channel to disseminate environmental information and promote weather awareness activities including outreach and educational efforts.

Thunderstorms should develop in central SD late this afternoon and move east through the evening and overnight hours. Th...
09/01/2026

Thunderstorms should develop in central SD late this afternoon and move east through the evening and overnight hours. The main threats will be hail to the size of golf balls and wind gusts to 70 mph. A very isolated tornado will also be possible during the evening.

Scattered thunderstorms look to return by later Tuesday, and while confidence in exact location remains low, any storm t...
08/31/2026

Scattered thunderstorms look to return by later Tuesday, and while confidence in exact location remains low, any storm that does develop near and south of I-90 will be capable of being severe during the evening and early overnight with up to golf ball sized hail and 70 mph wind gusts. Plan ahead for any evening activities and be sure to monitor a reliable weather source for updates.

Patchy fog has developed this morning in and around the De Smet to Brookings area in South Dakota.Be prepared for quickl...
08/31/2026

Patchy fog has developed this morning in and around the De Smet to Brookings area in South Dakota.

Be prepared for quickly changing visibility in this area if you'll be on the road this morning.

The fog will lift over the next few hours.

The hot and humid conditions will continue with highs mainly in the 80s to 90s for the week. Otherwise, periodic shower ...
08/31/2026

The hot and humid conditions will continue with highs mainly in the 80s to 90s for the week. Otherwise, periodic shower and thunderstorm chances are expected with the focus being on Tuesday and Thursday. With a few stronger storms possible, make sure to have multiple ways to receive warning information.

Hot and humid conditions continue into the work week. Isolated to scattered showers and storms return Monday night and T...
08/30/2026

Hot and humid conditions continue into the work week. Isolated to scattered showers and storms return Monday night and Tuesday for portions of the area, with more widespread chances expected Tuesday night. A few storms could be strong to severe; stay weather aware especially if you have outdoor plans!

Heat indices have already warmed to the 80s and 90s early this afternoon.If you have outdoor plans today, remember to fo...
08/30/2026

Heat indices have already warmed to the 80s and 90s early this afternoon.

If you have outdoor plans today, remember to follow the necessary safety precautions to stay safe in the heat!

Here's a reminder of ways to stay safe today. 👇

Patchy fog persists across parts of southeast South Dakota and southwest Minnesota this morning.If you will be out trave...
08/30/2026

Patchy fog persists across parts of southeast South Dakota and southwest Minnesota this morning.

If you will be out traveling, please make sure to drive to conditions as quick drops in visibility are possible!

The fog will lift over the next hour or two.

After some patchy fog this morning, hot and humid conditions will continue through at least Monday. With increased humid...
08/30/2026

After some patchy fog this morning, hot and humid conditions will continue through at least Monday. With increased humidity, some spots could see heat indexes climb into the upper 90s to low 100s at times mainly along the Missouri River Valley.

4:30 PM | 8/29Isolated storms are possible tonight west of I-29. A stronger storm may produce large hail or damaging win...
08/29/2026

4:30 PM | 8/29

Isolated storms are possible tonight west of I-29. A stronger storm may produce large hail or damaging winds west of the James. Otherwise, periodic shower and storm chances continue through Monday, with more widespread chances Tuesday. Isolated storms could be strong to severe. Hot and humid conditions continue.

Some parts of the area received a very welcomed rainfall last night, especially those areas of Moody and Pipestone count...
08/29/2026

Some parts of the area received a very welcomed rainfall last night, especially those areas of Moody and Pipestone counties which were recently placed into Extreme (Level 3 of 4) drought. Here's some select NWS Cooperative Weather Observer and reports from this morning.

Feel free to add your rainfall reports to the list via comment!

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26 W Weather Lane
Sioux Falls, SD
57104

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+16053304247

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