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Dayton, Wisconsin Weather Forecast
Dayton, Wisconsin Weather
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Weather Forecast for Dayton, Wisconsin : Green County
Issued: 6:26 am CST Dec 7, 2025 Latitude: 42.8269474 Longitude: -89.5131761 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
Sunny on Today Increasing Clouds on Tonight Mostly Cloudy on Monday 30% chance of rain & snow on Tuesday 30% chance of snow on Wednesday 30% chance of snow on Thursday Partly Sunny on Friday Partly Sunny on Saturday
High: 12 °F Low: 2 °F High: 23°F High: 36°F High: 34°F High: 24°F High: 14°F High: 10°F
Low: 25 °F Low: 29°F Low: 13°F Low: 4°F Low: -3°F  
Sunny Increasing Clouds Mostly Cloudy Rain & Snow Snow Snow Partly Sunny Partly Sunny
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Current Conditions at
MONROE - (KEFT)
19°
Feels like 7°F
Clear
as of 6:35 AM CST
Rel. Humidity: 100%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
10 MPH
020° North
Cloud Level(s): Clear
Current Conditions at
MADISON - (KMSN)
19°
Feels like 8°F
Mostly Cloudy
as of 6:17 AM CST
Rel. Humidity: 92%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: MVFR
Wind Data
9 MPH
350° North
Cloud Level(s): Broken at 1000ft
Current Conditions at
JANESVILLE - (KJVL)
23°
Feels like 11°F
Cloudy
Light Snow
as of 5:45 AM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 6 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
12 MPH
010° North
Cloud Level(s): Solid Overcast at 11000ft
Sunny on Today Today... Sunny, with a temperature falling to around 12 by 5pm. North wind 5 to 10 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 2. North wind around 5 mph becoming calm in the evening.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 23. Light south wind increasing to 5 to 10 mph in the morning.

40% chance of snow Monday Night Monday Night... A 40 percent chance of snow. Mostly cloudy, with a temperature rising to around 25 by 4am. South wind 10 to 15 mph.

30% chance of rain & snow Tuesday Tuesday... A chance of rain after noon, mixing with snow after 3pm. Mostly cloudy, with a high near 36. Southwest wind around 10 mph. Chance of precipitation is 30%.

90% chance of rain & snow Tuesday Night Tuesday Night... Rain, possibly mixed with snow. Low around 29. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

30% chance of snow Wednesday Wednesday... A 30 percent chance of snow before noon. Mostly cloudy, with a high near 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

20% chance of snow Wednesday Night Wednesday Night... A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 13. Northwest wind 5 to 10 mph.

30% chance of snow Thursday Thursday... A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 24.

30% chance of snow Thursday Night Thursday Night... A 30 percent chance of snow. Mostly cloudy, with a low around 4.

Partly Sunny on Friday Friday... Partly sunny, with a high near 14.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -3.

Partly Sunny on Saturday Saturday... Partly sunny and cold, with a high near 10.

Sun Almanac for Dayton, Wisconsin
Sunrise: 07:16 AM
Sunset: 4:24 PM
Civil Sunrise:06:44 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:06 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.