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

Overnight: A 40 percent chance of rain. Cloudy, with a steady temperature around 38. West wind around 15 mph, with gusts as high as 30 mph.
Chance Rain


 Thursday

Thursday: A slight chance of rain before 9am, then a slight chance of snow between 9am and 5pm. Mostly cloudy, with a temperature falling to around 14 by 4pm. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 20%.
Windy. Slight
Chance
Rain/Snow
then Slight
Chance Snow
 Thursday
Night
Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Windy, with a northwest wind 20 to 30 mph decreasing to 5 to 15 mph after midnight. Winds could gust as high as 40 mph.
Decreasing
Clouds and
Windy then
Mostly Clear
 Friday

Friday: Mostly sunny, with a high near 35. West wind 5 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 25 mph.
Mostly Sunny


 Friday
Night
Friday Night: Mostly cloudy, with a steady temperature around 32. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Mostly Cloudy


 Saturday

Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 34. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Decreasing
Clouds

 Saturday
Night
Saturday Night: Mostly clear, with a low around 14.
Mostly Clear


 Sunday

Sunday: Mostly sunny, with a high near 34.
Mostly Sunny


 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 27.
Mostly Cloudy
Lo 38 °F Hi 34 °F⇓ Lo 5 °F Hi 35 °F Lo 32 °F Hi 34 °F Lo 14 °F Hi 34 °F Lo 27 °F

Hazardous Weather Outlook
Wind Advisory
 

Overnight
 
 A 40 percent chance of rain. Cloudy, with a steady temperature around 38. West wind around 15 mph, with gusts as high as 30 mph.
Thursday
 
 A slight chance of rain before 9am, then a slight chance of snow between 9am and 5pm. Mostly cloudy, with a temperature falling to around 14 by 4pm. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 20%.
Thursday Night
 
 Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Windy, with a northwest wind 20 to 30 mph decreasing to 5 to 15 mph after midnight. Winds could gust as high as 40 mph.
Friday
 
 Mostly sunny, with a high near 35. West wind 5 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 25 mph.
Friday Night
 
 Mostly cloudy, with a steady temperature around 32. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Saturday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 34. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
 
 Mostly clear, with a low around 14.
Sunday
 
 Mostly sunny, with a high near 34.
Sunday Night
 
 Mostly cloudy, with a low around 27.
Monday
 
 Mostly sunny, with a high near 42.
Monday Night
 
 Partly cloudy, with a low around 30.
Tuesday
 
 Partly sunny, with a high near 40.
Tuesday Night
 
 Mostly cloudy, with a low around 26.
Wednesday
 
 Mostly cloudy, with a high near 41.

 

Forecast from NOAA-NWS for Storm Lake IA.