Boscobel, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boscobel, a city in Grant County, Wisconsin.
Tonight
53°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 53, with temperatures rising to around 56 overnight. South wind around 10 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Boscobel
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Showers And Thunderstorms | 10 mph S | 90% |
| Wednesday | 57°F | Rain Showers Likely | 9 to 14 mph SW | 67% |
| Wednesday Night | 44°F | Rain Showers | 14 mph SW | 78% |
| Thursday | 52°F | Rain Showers | 7 to 12 mph W | 80% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 19% |
| Friday | 51°F | Partly Sunny | 2 to 9 mph N | 4% |
| Friday Night | 29°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 32°F | Partly Cloudy | 2 mph W | 5% |
| Sunday | 59°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 8 mph W | 15% |
| Sunday Night | 33°F | Mostly Clear | 3 mph SW | 5% |
| Monday | 62°F | Mostly Sunny | 2 to 10 mph SW | 1% |
| Monday Night | 37°F | Mostly Clear | 2 to 6 mph W | 1% |
| Tuesday | 61°F | Sunny | 2 to 7 mph W | 1% |
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 Nov 4, 2026.