National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, Mar-13-2026 4:34am CDT
Cottage Grove
 
  Friday

Friday: Chance Light Snow then Mostly Cloudy
Chance Light Snow then Mostly Cloudy
Saturday

Saturday: Slight Chance Light Snow
Slight Chance Light Snow
Sunday

Sunday: Sleet
Sleet
Monday

Monday: Snow And Areas Of Blowing Snow
Snow And Areas Of Blowing Snow
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Chance Light Snow
Chance Light Snow
Thursday

Thursday: Mostly Sunny
Mostly Sunny
  Hi 39 °F Hi 39 °F Hi 43 °F Hi 22 °F Hi 23 °F Hi 39 °F Hi 46 °F
 
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday
Night
Saturday Night: Light Snow Likely
Light Snow Likely
Sunday
Night
Sunday Night: Heavy Snow And Blowing Snow
Heavy Snow And Blowing Snow
Monday
Night
Monday Night: Chance Light Snow then Partly Cloudy
Chance Light Snow then Partly Cloudy
Tuesday
Night
Tuesday Night: Chance Light Snow
Chance Light Snow
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
 
Lo 32 °F Lo 27 °F Lo 31 °F Lo 16 °F Lo 2 °F Lo 13 °F Lo 27 °F  

Winter Storm Watch issued March 12 at 11:59PM CDT until March 16 at 4:00PM CDT
High Wind Warning issued March 12 at 11:55PM CDT until March 13 at 4:00PM CDT
 

Overnight
 
Mostly cloudy. Low around 32, with temperatures rising to around 37 overnight. West wind around 25 mph, with gusts as high as 50 mph. New rainfall amounts less than a tenth of an inch possible.
Friday
 
A chance of rain before 7am, then a chance of snow between 7am and 10am. Mostly cloudy, with a high near 39. West wind 20 to 30 mph, with gusts as high as 55 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
Friday Night
 
Mostly cloudy, with a low around 27. Northwest wind 5 to 20 mph, with gusts as high as 35 mph.
Saturday
 
A slight chance of snow between 7am and 1pm. Cloudy, with a high near 39. East wind 5 to 10 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible.
Saturday Night
 
Snow likely between 7pm and 10pm, then snow likely and a slight chance of freezing rain between 10pm and 1am, then sleet and rain and snow. Cloudy, with a low around 31. East wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible. Little or no ice accumulation expected.
Sunday
 
Sleet and rain and snow before 10am, then rain and snow between 10am and 4pm, then a slight chance of sleet and rain and snow. Cloudy. High near 43, with temperatures falling to around 38 in the afternoon. Northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
 
A slight chance of sleet and rain and snow before 7pm, then snow and blowing snow and a slight chance of sleet and a slight chance of freezing rain. Cloudy, with a low around 16. North wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible. Little or no ice accumulation expected.
Monday
 
Snow and areas of blowing snow. Cloudy, with a high near 22. Northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Monday Night
 
A chance of snow before 7pm. Partly cloudy, with a low around 2. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible.
Tuesday
 
Mostly sunny, with a high near 23.
Tuesday Night
 
A chance of snow after 7pm. Mostly cloudy. Low around 13, with temperatures rising to around 18 overnight. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
Wednesday
 
A chance of snow before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
Wednesday Night
 
Mostly cloudy, with a low around 27.
Thursday
 
Mostly sunny, with a high near 46.

 

Forecast from NOAA-NWS for Cottage Grove, WI.