National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sat, Jun-20-2026 1:34am CDT
Cottage Grove
 
  Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

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

Thursday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Friday

Friday: Mostly Sunny
Mostly Sunny
  Hi 74 °F Hi 72 °F Hi 75 °F Hi 76 °F Hi 75 °F Hi 76 °F Hi 78 °F
 
Overnight

Overnight: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
Showers And T-Storms Likely then Slight Chance Showers And T-Storms
Thursday
Night
Thursday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
 
Lo 54 °F Lo 53 °F Lo 52 °F Lo 51 °F Lo 56 °F Lo 54 °F Lo 54 °F  

 

Overnight
 
Mostly clear, with a low around 54. West wind 5 to 10 mph.
Saturday
 
Sunny, with a high near 74. Northwest wind 5 to 10 mph.
Saturday Night
 
Partly cloudy, with a low around 53. North wind 0 to 10 mph.
Sunday
 
A chance of rain showers after 3pm. Mostly cloudy, with a high near 72. East wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday Night
 
A chance of rain showers before 1am. Mostly cloudy, with a low around 52. Northeast wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
Mostly sunny, with a high near 75. Northeast wind 5 to 10 mph.
Monday Night
 
Mostly clear, with a low around 51. East wind 0 to 5 mph.
Tuesday
 
Mostly sunny, with a high near 76. Northwest wind 0 to 5 mph.
Tuesday Night
 
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Partly cloudy, with a low around 56. Chance of precipitation is 70%.
Wednesday
 
Showers and thunderstorms likely. Mostly sunny, with a high near 75. Chance of precipitation is 70%.
Wednesday Night
 
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 60%.
Thursday
 
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 54. Chance of precipitation is 20%.
Friday
 
Mostly sunny, with a high near 78.

 

Forecast from NOAA-NWS for Cottage Grove, WI.