| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Mar-30-2026 1:21am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 42. Southwest wind around 5 mph. |
| Monday |
Sunny, with a high near 74. South wind 5 to 10 mph. |
| Monday Night |
A slight chance of thunderstorms and a slight chance of rain between 9pm and 1am. Mostly cloudy, with a low around 52. East wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
A slight chance of thunderstorms and a slight chance of rain between 7am and 10am, then rain and a chance of thunderstorms. Mostly cloudy. High near 66, with temperatures falling to around 54 in the afternoon. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
| Tuesday Night |
A chance of rain before 1am. Mostly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Wednesday |
A chance of rain and snow after 1pm. Mostly cloudy, with a high near 44. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday Night |
Rain and snow likely before 1am, then rain and snow between 1am and 4am, then freezing rain and rain. Cloudy, with a low around 32. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of around one inch possible. Little or no ice accumulation expected. |
| Thursday |
Freezing rain and rain. Cloudy, with a high near 48. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than half an inch possible. Little or no ice accumulation expected. |
| Thursday Night |
Rain. Cloudy, with a low around 35. Chance of precipitation is 90%. |
| Friday |
A chance of rain. Mostly cloudy, with a high near 52. Chance of precipitation is 30%. |
| Friday Night |
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 60%. |
| Saturday |
Rain likely. Cloudy, with a high near 53. Chance of precipitation is 60%. |
| Saturday Night |
Rain likely before 4am, then a slight chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. New snow accumulation of less than half an inch possible. |
| Sunday |
A slight chance of rain and snow before 7am. Mostly cloudy, with a high near 46. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible. |
Forecast from NOAA-NWS for Cottage Grove, WI.