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

Today: Partly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.
Partly Sunny

 Tonight

Tonight: Partly cloudy, with a low around 58. South southeast wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Tuesday

Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Chance
Showers then
Chance
T-storms
 Tuesday
Night
Tuesday Night: A 50 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming light west in the evening.
Chance
T-storms

 Wednesday

Wednesday: Sunny, with a high near 79. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming light north after midnight.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 78.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 56.
Partly Cloudy

 Friday

Friday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78.
Chance
Showers
Hi 76 °F Lo 58 °F Hi 78 °F Lo 58 °F Hi 79 °F Lo 54 °F Hi 78 °F Lo 56 °F Hi 78 °F

Hazardous Weather Outlook
 

Today
 
 Partly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.
Tonight
 
 Partly cloudy, with a low around 58. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday Night
 
 A 50 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming light west in the evening.
Wednesday
 
 Sunny, with a high near 79. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Partly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming light north after midnight.
Thursday
 
 Mostly sunny, with a high near 78.
Thursday Night
 
 Partly cloudy, with a low around 56.
Friday
 
 A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78.
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 85.
Saturday Night
 
 A 40 percent chance of showers. Partly cloudy, with a low around 70.
Sunday
 
 Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Le Mars IA.