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
Rain Showers Likely
Rain showers likely. Cloudy. Low around 53, with temperatures rising to around 56 overnight. South wind around 9 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. 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 | Rain Showers Likely | 9 mph S | 55% |
| 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.