National Weather Service Forecast for: Le Mars IA
Issued by: National Weather Service Sioux Falls, SD
Updated: 6:53 am CST Dec 20, 2025
 
Today

Today: Partly sunny, then gradually becoming sunny, with a high near 36. North northwest wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Becoming
Sunny
 Tonight

Tonight: Mostly clear, with a low around 18. West wind around 5 mph becoming calm in the evening.
Mostly Clear
 Sunday

Sunday: Mostly sunny, with a high near 38. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Sunny
 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 30. South wind around 15 mph, with gusts as high as 25 mph.
Mostly Cloudy
 Monday

Monday: Mostly sunny, with a high near 48. South wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 29. South southwest wind 5 to 10 mph becoming north northwest after midnight.
Partly Cloudy
 Tuesday

Tuesday: Mostly cloudy, with a high near 42.
Mostly Cloudy
 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 30.
Mostly Cloudy
 Wednesday

Wednesday: Mostly cloudy, with a high near 50.
Mostly Cloudy
Hi 36 °F Lo 18 °F Hi 38 °F Lo 30 °F Hi 48 °F Lo 29 °F Hi 42 °F Lo 30 °F Hi 50 °F

 

Today
 
 Partly sunny, then gradually becoming sunny, with a high near 36. North northwest wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
 
 Mostly clear, with a low around 18. West wind around 5 mph becoming calm in the evening.
Sunday
 
 Mostly sunny, with a high near 38. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
 
 Mostly cloudy, with a low around 30. South wind around 15 mph, with gusts as high as 25 mph.
Monday
 
 Mostly sunny, with a high near 48. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
 
 Partly cloudy, with a low around 29. South southwest wind 5 to 10 mph becoming north northwest after midnight.
Tuesday
 
 Mostly cloudy, with a high near 42.
Tuesday Night
 
 Mostly cloudy, with a low around 30.
Wednesday
 
 Mostly cloudy, with a high near 50.
Wednesday Night
 
 Mostly cloudy, with a low around 37.
Christmas Day
 
 Partly sunny, with a high near 53.
Thursday Night
 
 Mostly clear, with a low around 30.
Friday
 
 Mostly sunny, with a high near 44.

 

Forecast from NOAA-NWS for Le Mars IA.