Boscobel, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boscobel, a city in Grant County, Wisconsin.
Overnight
59°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 59. East wind around 12 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Boscobel
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Showers And Thunderstorms | 12 mph E | 96% |
| Saturday | 71°F | Showers And Thunderstorms | 5 to 8 mph SE | 94% |
| Saturday Night | 57°F | Showers And Thunderstorms | 5 to 12 mph NE | 85% |
| Sunday | 70°F | Slight Chance Rain Showers then Partly Sunny | 14 mph NE | 16% |
| Sunday Night | 51°F | Mostly Cloudy | 6 to 12 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 | 2 to 6 mph NE | 4% |
| Wednesday | 67°F | Mostly Sunny | 2 to 6 mph NE | 2% |
| Wednesday Night | 47°F | Partly Cloudy | 3 mph NE | 2% |
| Thursday | 69°F | Mostly Sunny | 3 mph NE | 3% |
| Thursday Night | 49°F | Partly Cloudy | 2 mph NE | 2% |
| Friday | 72°F | Mostly Sunny | 1 to 5 mph E | 2% |
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.