National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sat, May-09-2026 10:46am CDT
Cottage Grove
 
Today

Today: Scattered Rain Showers
Scattered Rain Showers
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Areas Of Frost then Sunny
Areas Of Frost then Sunny
Tuesday

Tuesday: Rain Showers
Rain Showers
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Friday

Friday: Chance Rain Showers
Chance Rain Showers
 
Hi 67 °F Hi 60 °F Hi 60 °F Hi 68 °F Hi 63 °F Hi 69 °F Hi 77 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost
Monday
Night
Monday Night: Partly Cloudy then Slight Chance Rain Showers
Partly Cloudy then Slight Chance Rain Showers
Tuesday
Night
Tuesday Night: Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
Showers And T-Storms Likely then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday
Night
Friday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
 
Lo 38 °F Lo 36 °F Lo 39 °F Lo 45 °F Lo 41 °F Lo 48 °F Lo 54 °F  

 

Today
 
Scattered rain showers before 1pm. Partly sunny, with a high near 67. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
 
Mostly clear, with a low around 38. Northwest wind 5 to 15 mph.
Sunday
 
Mostly sunny, with a high near 60. Northwest wind 5 to 15 mph.
Sunday Night
 
Areas of frost after 3am. Mostly clear, with a low around 36. North wind 0 to 10 mph.
Monday
 
Areas of frost before 7am. Sunny, with a high near 60. North wind 0 to 5 mph.
Monday Night
 
A slight chance of rain showers after 1am. Partly cloudy, with a low around 39. Southeast wind 0 to 10 mph. Chance of precipitation is 20%.
Tuesday
 
Rain showers before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 45. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Wednesday
 
Mostly sunny, with a high near 63.
Wednesday Night
 
Mostly clear, with a low around 41.
Thursday
 
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Friday
 
A chance of rain showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Friday Night
 
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 54. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.