National Weather Service Forecast for: Le Mars IA
Issued by: National Weather Service Sioux Falls, SD
Updated: 3:18 am CST Dec 18, 2025
 
Overnight

Overnight: A 30 percent chance of rain, mainly between 4am and 5am. Cloudy, with a steady temperature around 39. West wind around 15 mph, with gusts as high as 30 mph.
Chance Rain

 Thursday

Thursday: A 30 percent chance of snow, mainly before 11am. Increasing clouds, with a temperature falling to around 16 by 3pm. Windy, with a west northwest wind 15 to 20 mph increasing to 25 to 30 mph in the morning. Winds could gust as high as 50 mph.
Chance Snow
and Windy

 Thursday
Night
Thursday Night: Mostly clear, with a low around 8. Blustery, with a northwest wind 15 to 25 mph becoming west northwest 5 to 10 mph. Winds could gust as high as 35 mph.
Mostly Clear
and Blustery
then Mostly
Clear
 Friday

Friday: Mostly sunny, with a high near 36. Light south wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Mostly Sunny

 Friday
Night
Friday Night: Mostly cloudy, with a low around 28. South wind 5 to 10 mph becoming north northwest after midnight.
Mostly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 36. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 16.
Mostly Clear

 Sunday

Sunday: Mostly sunny, with a high near 36.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 29.
Mostly Cloudy
Lo 39 °F Hi 34 °F⇓ Lo 8 °F Hi 36 °F Lo 28 °F Hi 36 °F Lo 16 °F Hi 36 °F Lo 29 °F

Hazardous Weather Outlook
High Wind Warning
 

Overnight
 
 A 30 percent chance of rain, mainly between 4am and 5am. Cloudy, with a steady temperature around 39. West wind around 15 mph, with gusts as high as 30 mph.
Thursday
 
 A 30 percent chance of snow, mainly before 11am. Increasing clouds, with a temperature falling to around 16 by 3pm. Windy, with a west northwest wind 15 to 20 mph increasing to 25 to 30 mph in the morning. Winds could gust as high as 50 mph.
Thursday Night
 
 Mostly clear, with a low around 8. Blustery, with a northwest wind 15 to 25 mph becoming west northwest 5 to 10 mph. Winds could gust as high as 35 mph.
Friday
 
 Mostly sunny, with a high near 36. Light south wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
 
 Mostly cloudy, with a low around 28. South wind 5 to 10 mph becoming north northwest after midnight.
Saturday
 
 Mostly sunny, with a high near 36. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
 
 Mostly clear, with a low around 16.
Sunday
 
 Mostly sunny, with a high near 36.
Sunday Night
 
 Mostly cloudy, with a low around 29.
Monday
 
 Mostly sunny, with a high near 45.
Monday Night
 
 Partly cloudy, with a low around 30.
Tuesday
 
 Partly sunny, with a high near 41.
Tuesday Night
 
 Mostly cloudy, with a low around 27.
Wednesday
 
 Mostly cloudy, with a high near 43.

 

Forecast from NOAA-NWS for Le Mars IA.