National Weather Service Forecast for: Madison SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 7:18 am CDT Jun 30, 2026
 
Today

Today: Sunny, with a high near 87. South wind around 10 mph becoming west in the morning. Winds could gust as high as 20 mph.
Sunny

 Tonight

Tonight: A chance of rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 65. West southwest wind 5 to 10 mph becoming southeast in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Clear
then Showers
Likely
 Wednesday

Wednesday: Showers and thunderstorms likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 85. Southeast wind around 10 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 64. West northwest wind around 5 mph becoming east after midnight.
Mostly Clear

 Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny
then Chance
T-storms
 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Showers

 Friday

Friday: Mostly sunny, with a high near 89.
Mostly Sunny

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Showers
Likely
 Independence
Day
Independence Day: Partly sunny, with a high near 87.
Partly Sunny
Hi 87 °F Lo 65 °F Hi 85 °F Lo 64 °F Hi 90 °F Lo 68 °F Hi 89 °F Lo 69 °F Hi 87 °F

Hazardous Weather Outlook
 

Today
 
 Sunny, with a high near 87. South wind around 10 mph becoming west in the morning. Winds could gust as high as 20 mph.
Tonight
 
 A chance of rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 65. West southwest wind 5 to 10 mph becoming southeast in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers and thunderstorms likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 85. Southeast wind around 10 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Mostly clear, with a low around 64. West northwest wind around 5 mph becoming east after midnight.
Thursday
 
 A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
 
 Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Friday
 
 Mostly sunny, with a high near 89.
Friday Night
 
 Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Independence Day
 
 Partly sunny, with a high near 87.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 60%.
Sunday
 
 Mostly sunny, with a high near 84.
Sunday Night
 
 Mostly clear, with a low around 64.
Monday
 
 Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Madison SD.