National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Aug-06-2026 1:21am CDT
Cottage Grove
 
  Thursday

Thursday: Areas Of Fog then Partly Sunny
Areas Of Fog then Partly Sunny
Friday

Friday: Patchy Fog then Mostly Sunny
Patchy Fog then Mostly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday

Monday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
Tuesday

Tuesday: Chance Rain Showers
Chance Rain Showers
Wednesday

Wednesday: Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Rain Showers then Slight Chance Showers And T-Storms
  Hi 81 °F Hi 84 °F Hi 82 °F Hi 83 °F Hi 83 °F Hi 81 °F Hi 79 °F
 
Overnight

Overnight: Areas Of Fog
Areas Of Fog
Thursday
Night
Thursday Night: Partly Cloudy then Patchy Fog
Partly Cloudy then Patchy Fog
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Partly Cloudy then Chance Showers And Thunderstorms
Partly Cloudy then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Partly Cloudy then Chance Showers And Thunderstorms
Partly Cloudy then Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 60 °F Lo 63 °F Lo 64 °F Lo 64 °F Lo 65 °F Lo 63 °F Lo 61 °F  

 

Overnight
 
Areas of fog. Mostly cloudy, with a low around 60. Northwest wind around 0 mph.
Thursday
 
Areas of fog before 9am. Partly sunny, with a high near 81. East wind 0 to 5 mph.
Thursday Night
 
Patchy fog after 2am. Partly cloudy, with a low around 63. South wind 0 to 5 mph.
Friday
 
Patchy fog before 8am. Mostly sunny, with a high near 84. South wind 0 to 10 mph.
Friday Night
 
A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 64. West wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Sunny, with a high near 82. Northwest wind around 5 mph.
Saturday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. Southwest wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Sunday
 
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 50%.
Monday
 
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Monday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Tuesday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
 
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Wednesday
 
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.