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Monticello, Wisconsin Weather Forecast
Monticello, Wisconsin Weather
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Weather Forecast for Monticello, Wisconsin : Green County
Issued: 6:08 am CST Jan 23, 2026 Latitude: 42.7455607 Longitude: -89.5948432 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Sunny on Today Increasing Clouds on Tonight Mostly Cloudy on Saturday 20% chance of snow on Sunday Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday
High: -6°F Low: -15°F High: 2 °F High: 9 °F High: 10°F High: 16°F High: 11°F High: 10°F
Low: -3°F Low: -7°F Low: 3 °F Low: -2°F Low: -4°F  
Sunny Increasing Clouds Mostly Cloudy Snow Sunny Mostly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
MONROE - (KEFT)
-15°
Feels like -33°F
Clear
as of 5:55 AM CST
Rel. Humidity: 42%
Dew Point: -31°F
Visibility: 10 Miles
Pressure: 30.54 in.
Flight Rule: VFR
Wind Data
9 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
MADISON - (KMSN)
-17°
Feels like -36°F
Clear
as of 5:53 AM CST
Rel. Humidity: 51%
Dew Point: -29°F
Visibility: 10 Miles
Pressure: 30.58 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 20 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
JANESVILLE - (KJVL)
-15°
Feels like -37°F
Clear
as of 5:45 AM CST
Rel. Humidity: 51%
Dew Point: -27°F
Visibility: 10 Miles
Pressure: 30.57 in.
Flight Rule: VFR
Wind Data
14 MPH
320° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny and cold, with a high near -6. Wind chill values between -30 and -40. Northwest wind 10 to 15 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around -15. Wind chill values between -20 and -25. Northwest wind around 5 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 2. Wind chill values between -15 and -25. North wind around 5 mph becoming calm.

20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow. Mostly cloudy, with a low around -3. Wind chill values between -5 and -10. Calm wind becoming north around 5 mph after midnight.

20% chance of snow Sunday Sunday... A 20 percent chance of snow before noon. Mostly cloudy and cold, with a high near 9. North wind 5 to 10 mph.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around -7. Northwest wind 5 to 10 mph.

Sunny on Monday Monday... Sunny and cold, with a high near 10. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 3. Southwest wind around 10 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 16.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around -2.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 11.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around -4.

Mostly Sunny on Thursday Thursday... Mostly sunny and cold, with a high near 10.

Sun Almanac for Monticello, Wisconsin
Sunrise: 07:21 AM
Sunset: 5:00 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:30 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:38 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.