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

Today: Sunny, with a high near 90. West southwest wind around 5 mph.
Sunny

 Tonight

Tonight: A chance of rain and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. Southwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Cloudy
then Showers
Likely
 Wednesday

Wednesday: Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 88. South southwest wind around 10 mph becoming east southeast in the morning. 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: Partly cloudy, with a low around 66. West wind 5 to 10 mph becoming east after midnight.
Partly Cloudy

 Thursday

Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Partly Sunny
then Slight
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 70. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
T-storms then
Showers

 Friday

Friday: Mostly sunny, with a high near 91.
Mostly Sunny

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Showers
Likely

 Independence
Day
Independence Day: Partly sunny, with a high near 89.
Partly Sunny
Hi 90 °F Lo 68 °F Hi 88 °F Lo 66 °F Hi 91 °F Lo 70 °F Hi 91 °F Lo 71 °F Hi 89 °F

Hazardous Weather Outlook
 

Today
 
 Sunny, with a high near 90. West southwest wind around 5 mph.
Tonight
 
 A chance of rain and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. Southwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 88. South southwest wind around 10 mph becoming east southeast in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Partly cloudy, with a low around 66. West wind 5 to 10 mph becoming east after midnight.
Thursday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South 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 70. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
 
 Mostly sunny, with a high near 91.
Friday Night
 
 Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Independence Day
 
 Partly sunny, with a high near 89.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 60%.
Sunday
 
 Mostly sunny, with a high near 86.
Sunday Night
 
 Partly cloudy, with a low around 65.
Monday
 
 Mostly sunny, with a high near 87.

 

Forecast from NOAA-NWS for Lennox SD.