| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, Sep-18-2026 8:36am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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Flood Watch issued September 17 at 9:07PM CDT until September 19 at 1:00PM CDT
| Today |
A chance of rain showers after 11am. Mostly cloudy, with a high near 69. East wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
Rain showers likely before 10pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 59. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible. |
| Saturday |
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers and thunderstorms likely. Some of the storms could produce heavy rain. Cloudy, with a high near 69. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible. |
| Saturday Night |
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible. |
| Sunday |
Rain showers likely. Mostly cloudy, with a high near 65. Northeast wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible. |
| Sunday Night |
A chance of rain showers. Mostly cloudy, with a low around 48. Northeast wind around 15 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday |
A chance of rain showers. Cloudy, with a high near 61. Northeast wind around 15 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday Night |
A chance of rain showers. Mostly cloudy, with a low around 46. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
A slight chance of rain showers before 7am. Partly sunny, with a high near 61. Chance of precipitation is 20%. |
| Tuesday Night |
Partly cloudy, with a low around 45. |
| Wednesday |
Mostly sunny, with a high near 64. |
| Wednesday Night |
Mostly cloudy, with a low around 45. |
| Thursday |
Partly sunny, with a high near 68. |
| Thursday Night |
Partly cloudy, with a low around 48. |
Forecast from NOAA-NWS for Cottage Grove, WI.