National Weather Service Forecast for: Lennox SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 1:33 am CDT Jun 22, 2026
 
Today

Today: Partly sunny, with a high near 74. North wind around 5 mph becoming south in the afternoon.
Partly Sunny
Tonight

Tonight: Mostly cloudy, with a low around 58. Southeast wind around 5 mph.
Mostly Cloudy
Tuesday

Tuesday: Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 4pm.  Mostly cloudy, with a high near 76. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph.
Chance
Showers
Wednesday

Wednesday: Sunny, with a high near 77. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunny
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 54. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Partly Cloudy
Thursday

Thursday: Mostly sunny, with a high near 77.
Mostly Sunny
Thursday
Night
Thursday Night: Partly cloudy, with a low around 56.
Partly Cloudy
Friday

Friday: A 50 percent chance of showers.  Mostly cloudy, with a high near 76.
Chance
Showers
Hi 74 °F Lo 58 °F Hi 76 °F Lo 57 °F Hi 77 °F Lo 54 °F Hi 77 °F Lo 56 °F Hi 76 °F

Hazardous Weather Outlook
 

Today
 
Partly sunny, with a high near 74. North wind around 5 mph becoming south in the afternoon.
Tonight
 
Mostly cloudy, with a low around 58. Southeast wind around 5 mph.
Tuesday
 
Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 76. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph.
Wednesday
 
Sunny, with a high near 77. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
 
Partly cloudy, with a low around 54. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
 
Mostly sunny, with a high near 77.
Thursday Night
 
Partly cloudy, with a low around 56.
Friday
 
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Friday Night
 
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Saturday
 
Mostly cloudy, with a high near 83. Breezy.
Saturday Night
 
A 50 percent chance of showers. Partly cloudy, with a low around 68. Breezy.
Sunday
 
A 30 percent chance of showers. Partly sunny, with a high near 88. Breezy.

 

Forecast from NOAA-NWS for Lennox SD.