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Monticello, WI Weather & Growing Conditions

Today
72°F
Showers And Thunderstorms
Showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and 11am, then showers and thunderstorms. Cloudy, with a high near 72. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 72°F Showers And Thunderstorms 5 to 10 mph SE 96%
Tonight 60°F Showers And Thunderstorms 5 to 10 mph E 81%
Sunday 64°F Rain Showers Likely 15 mph NE 68%
Sunday Night 53°F Mostly Cloudy then Slight Chance Rain Showers 15 mph NE 16%
Monday 62°F Slight Chance Rain Showers 15 mph NE 21%
Monday Night 49°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph NE 19%
Tuesday 61°F Partly Sunny 10 to 15 mph NE 11%
Tuesday Night 47°F Partly Cloudy 5 to 10 mph NE 5%
Wednesday 64°F Mostly Sunny 5 to 10 mph NE 2%
Wednesday Night 49°F Partly Cloudy 5 to 10 mph NE 1%
Thursday 66°F Mostly Sunny 5 mph NE 4%
Thursday Night 50°F Partly Cloudy 0 to 5 mph NE 3%
Friday 70°F Mostly Sunny 5 mph NE 4%
Friday Night 50°F Partly Cloudy 0 to 5 mph E 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Monticello, WI

Last spring frost
Apr 27
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
5a

Explore more for Monticello, WI: full frost dates · planting calendar · Wisconsin frost dates

Climate data from the nearest NOAA station, Monroe Wwtp, Wi (9.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.