National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, Sep-30-2026 1:21am CDT
Cottage Grove
 
  Wednesday

Wednesday: Showers And Thunderstorms
Showers And T-Storms
Thursday

Thursday: Rain Showers
Rain Showers
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
  Hi 70 °F Hi 68 °F Hi 64 °F Hi 65 °F Hi 64 °F Hi 60 °F Hi 61 °F
 
Overnight

Overnight: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Wednesday
Night
Wednesday Night: Rain Showers
Rain Showers
Thursday
Night
Thursday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
 
Lo 61 °F Lo 62 °F Lo 47 °F Lo 40 °F Lo 46 °F Lo 38 °F Lo 40 °F  

 

Overnight
 
Rain showers likely before 4am, then showers and thunderstorms likely. Cloudy, with a low around 61. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday
 
Showers and thunderstorms. Mostly cloudy, with a high near 70. Southwest wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
 
Rain showers. Cloudy, with a low around 62. Southwest wind 0 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
 
Rain showers. Cloudy, with a high near 68. Northwest wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
 
A slight chance of rain showers between 7pm and 1am. Mostly cloudy, with a low around 47. North wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday
 
Mostly sunny, with a high near 64. North wind 5 to 10 mph.
Friday Night
 
Mostly clear, with a low around 40. North wind 0 to 5 mph.
Saturday
 
Mostly sunny, with a high near 65. Southeast wind 0 to 5 mph.
Saturday Night
 
Partly cloudy, with a low around 46.
Sunday
 
Mostly sunny, with a high near 64.
Sunday Night
 
Mostly clear, with a low around 38.
Monday
 
Sunny, with a high near 60.
Monday Night
 
Mostly clear, with a low around 40.
Tuesday
 
Sunny, with a high near 61.

 

Forecast from NOAA-NWS for Cottage Grove, WI.