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Boscobel, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Boscobel, a city in Grant County, Wisconsin.

Today
71°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 71, with temperatures falling to around 68 in the afternoon. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast for Boscobel

WhenTempForecastWindPrecip
Today 71°F Showers And Thunderstorms 5 mph SE 90%
Tonight 57°F Showers And Thunderstorms 6 mph NE 77%
Sunday 66°F Chance Rain Showers then Cloudy 9 mph NE 38%
Sunday Night 51°F Mostly Cloudy 8 mph NE 13%
Monday 65°F Slight Chance Rain Showers 9 mph NE 16%
Monday Night 46°F Slight Chance Rain Showers then Mostly Cloudy 3 to 7 mph NE 15%
Tuesday 64°F Mostly Sunny 7 mph NE 10%
Tuesday Night 44°F Partly Cloudy 1 to 6 mph NE 4%
Wednesday 67°F Mostly Sunny 2 to 7 mph NE 2%
Wednesday Night 47°F Partly Cloudy 0 to 3 mph NE 2%
Thursday 69°F Mostly Sunny 1 to 5 mph NE 3%
Thursday Night 49°F Partly Cloudy 2 mph NE 2%
Friday 72°F Mostly Sunny 0 to 5 mph E 2%
Friday Night 50°F Partly Cloudy 2 mph E 3%

Forecast source: National Weather Service (api.weather.gov) for Boscobel (43.147, -90.705). Updated through the day.

Growing snapshot for Boscobel

Last spring frost
May 3
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
5a

More local growing data for Boscobel: nearby ZIP 53805 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Boscobel Ap, Wi (1 mi from Boscobel). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.