National Weather Service Forecast for: Storm Lake IA
Issued by: National Weather Service Sioux Falls, SD
Updated: 8:28 am CDT May 29, 2026
 
Today

Today: A slight chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 80. Southeast wind around 10 mph. Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance
Showers
 Tonight

Tonight: A chance of showers, with thunderstorms also possible after 1am. Cloudy, with a low around 61. East wind around 10 mph. Chance of precipitation is 50%.
Chance
Showers

 Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 77. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Chance
Showers then
Chance
T-storms and
Breezy
 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Slight Chance
T-storms and
Breezy then
Showers
Likely
 Sunday

Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Showers
Likely

 Sunday
Night
Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. East southeast wind 10 to 15 mph. Chance of precipitation is 60%.
Showers
Likely

 Monday

Monday: Partly sunny, with a high near 81.
Partly Sunny


 Monday
Night
Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Chance
T-storms

 Tuesday

Tuesday: Partly sunny, with a high near 81.
Partly Sunny
Hi 80 °F Lo 61 °F Hi 77 °F Lo 58 °F Hi 78 °F Lo 60 °F Hi 81 °F Lo 58 °F Hi 81 °F

Hazardous Weather Outlook
 

Today
 
 A slight chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 80. Southeast wind around 10 mph. Chance of precipitation is 20%.
Tonight
 
 A chance of showers, with thunderstorms also possible after 1am. Cloudy, with a low around 61. East wind around 10 mph. Chance of precipitation is 50%.
Saturday
 
 A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 77. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
 
 A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Sunday
 
 Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. East southeast wind 10 to 15 mph. Chance of precipitation is 60%.
Monday
 
 Partly sunny, with a high near 81.
Monday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Tuesday
 
 Partly sunny, with a high near 81.
Tuesday Night
 
 Mostly cloudy, with a low around 56.
Wednesday
 
 Mostly sunny, with a high near 81.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Thursday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Storm Lake IA.