Monticello, WI Weather & Growing Conditions
Today
58°F
Cloudy then Isolated Rain Showers
Isolated rain showers after 3pm. Cloudy. High near 58, with temperatures falling to around 51 in the afternoon. Southwest wind around 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Cloudy then Isolated Rain Showers | 15 mph SW | 13% |
| Tonight | 45°F | Chance Rain Showers | 15 mph SW | 26% |
| Thursday | 53°F | Rain Showers Likely then Chance Light Rain | 10 to 15 mph W | 57% |
| Thursday Night | 39°F | Mostly Cloudy | 10 mph N | 11% |
| Friday | 47°F | Partly Sunny | 5 to 15 mph N | 3% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Monday | 59°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph W | 0% |
| Tuesday | 60°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 0 to 5 mph NW | 0% |
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 Nov 4, 2026.