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Hazardous Weather Conditions

Current conditions at

Sioux Falls, Foss Field (KFSD)

Lat: 43.58°NLon: 96.75°WElev: 1427ft.

Partly Cloudy

84°F

29°C

Humidity 72%
Wind Speed S 9 mph
Barometer 29.92 in (1012.0 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 15 Aug 6:56 pm CDT
Extended Forecast for

5 Miles W Lyons SD

Heat Advisory August 16, 12:00pm until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Some of the storms could be severe. Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Partly Cloudy
    then Severe
    Thunderstorms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Some of the storms could be severe. Cloudy, then gradually becoming mostly sunny, with a high near 92. Heat index values as high as 103. South southeast wind 5 to 15 mph becoming east in the morning. Chance of precipitation is 30%.

    High: 92 °F

    Severe
    Thunderstorms
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. East wind around 10 mph.

    Low: 72 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. East southeast wind 10 to 15 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph.

    Low: 68 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 4am. Some of the storms could be severe. Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Some of the storms could be severe. Cloudy, then gradually becoming mostly sunny, with a high near 92. Heat index values as high as 103. South southeast wind 5 to 15 mph becoming east in the morning. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. East wind around 10 mph.
Sunday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. East southeast wind 10 to 15 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph.
Monday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 10%.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Lyons SD
 43.73°N 96.88°W (Elev. 1535 ft)
Last Update:
6:56 pm CDT Aug 15, 2025
Forecast Valid:
7pm CDT Aug 15, 2025-6pm CDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation