Monticello, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monticello, a village in Green County, Wisconsin.
Overnight
60°F
Mostly Clear
Mostly clear, with a low around 60. South wind around 5 mph.
7-day forecast for Monticello
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 26% |
| Tuesday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 85% |
| Wednesday | 75°F | Patchy Fog | 5 mph NW | 63% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 35% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 21% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 4% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 5 mph S | 5% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 10 mph SW | 28% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph S | 47% |
| Monday | 84°F | Chance Rain Showers | 5 to 10 mph S | 47% |
Forecast source: National Weather Service (api.weather.gov) for Monticello (42.745, -89.590). Updated through the day.
Growing snapshot for Monticello
Last spring frost
Apr 27
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
5a
More local growing data for Monticello: nearby ZIP 53570 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Monroe Wwtp, Wi (9.4 mi from Monticello). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.