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

Today: Showers And Thunderstorms
Showers And T-Storms
Monday

Monday: Areas Of Fog then Partly Sunny
Areas Of Fog then Partly Sunny
Tuesday

Tuesday: Patchy Fog then Chance Showers And Thunderstorms
Patchy Fog then Chance Showers And T-Storms
Wednesday

Wednesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Thursday

Thursday: Partly Sunny
Partly Sunny
Friday

Friday: Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday

Saturday: Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Rain Showers then Slight Chance Showers And T-Storms
 
Hi 78 °F Hi 82 °F Hi 82 °F Hi 81 °F Hi 76 °F Hi 74 °F Hi 74 °F  
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Patchy Fog
Slight Chance Showers And T-Storms then Patchy Fog
Monday
Night
Monday Night: Partly Cloudy then Patchy Fog
Partly Cloudy then Patchy Fog
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 66 °F Lo 66 °F Lo 64 °F Lo 61 °F Lo 57 °F Lo 57 °F Lo 58 °F  

 

Today
 
Showers and thunderstorms before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm. Mostly cloudy, with a high near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
A slight chance of showers and thunderstorms before 11pm, then patchy fog. Mostly cloudy, with a low around 66. Northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday
 
Areas of fog before 9am. Partly sunny, with a high near 82. Southeast wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Monday Night
 
Patchy fog between 3am and 4am, then patchy fog and a slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Southeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
Patchy fog and a slight chance of showers and thunderstorms before 7am, then a chance of rain showers and patchy fog between 7am and 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. East wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Wednesday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Northwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night
 
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. North wind 0 to 5 mph. Chance of precipitation is 20%.
Thursday
 
Partly sunny, with a high near 76.
Thursday Night
 
Mostly cloudy, with a low around 57.
Friday
 
A slight chance of rain showers after 7am. Mostly sunny, with a high near 74. Chance of precipitation is 20%.
Friday Night
 
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
 
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 74. Chance of precipitation is 40%.
Saturday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.