Montello, WI Weather & Growing Conditions
Today
64°F
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
A slight chance of showers and thunderstorms before 10am, then showers and thunderstorms. Cloudy, with a high near 64. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph E | 79% |
| Tonight | 54°F | Showers And Thunderstorms Likely | 10 mph NE | 67% |
| Sunday | 66°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 15% |
| Sunday Night | 45°F | Mostly Cloudy | 10 to 15 mph NE | 3% |
| Monday | 61°F | Mostly Cloudy | 10 mph NE | 3% |
| Monday Night | 43°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Tuesday | 61°F | Mostly Sunny | 5 to 10 mph NE | 3% |
| Tuesday Night | 42°F | Mostly Clear | 5 mph NE | 3% |
| Wednesday | 64°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 44°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 45°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Friday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Montello, WI
Last spring frost
May 3
First fall frost
Oct 5
Growing season
153 days
Hardiness zone
5a
Explore more for Montello, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Montello, Wi (1.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.