Monticello, WI Weather & Growing Conditions
Today
83°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 10 mph SW | 26% |
| Tonight | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 85% |
| Wednesday | 75°F | Patchy Fog | 5 mph NW | 65% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 36% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 21% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 3% |
| Friday | 80°F | Mostly Sunny | 0 to 5 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 5 mph S | 5% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 28% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 47% |
| Monday | 83°F | Chance Rain Showers | 5 to 10 mph S | 47% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 41% |
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 Aug 4, 2026.