Boulder Junction, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder Junction, a community in Vilas County, Wisconsin.
Today
60°F
Chance Rain Showers
A chance of rain showers after 9am. Cloudy, with a high near 60. East wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Boulder Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Chance Rain Showers | 7 mph E | 29% |
| Tonight | 47°F | Slight Chance Rain Showers then Patchy Fog | 1 to 5 mph NE | 16% |
| Sunday | 62°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Sunday Night | 38°F | Mostly Cloudy | 2 to 8 mph NE | 0% |
| Monday | 63°F | Partly Sunny | 2 to 6 mph E | 0% |
| Monday Night | 35°F | Partly Cloudy then Patchy Fog | 0 to 5 mph E | 0% |
| Tuesday | 65°F | Patchy Frost then Sunny | 0 to 6 mph E | 0% |
| Tuesday Night | 37°F | Mostly Clear then Patchy Fog | 0 to 3 mph E | 0% |
| Wednesday | 68°F | Patchy Fog then Sunny | 0 to 6 mph ESE | 0% |
| Wednesday Night | 39°F | Mostly Clear then Patchy Fog | 0 to 3 mph E | 1% |
| Thursday | 69°F | Patchy Fog then Mostly Sunny | 0 to 3 mph E | 2% |
| Thursday Night | 42°F | Partly Cloudy | 2 mph ENE | 3% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SSE | 3% |
| Friday Night | 43°F | Partly Cloudy | 0 to 3 mph SSE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Boulder Junction (46.115, -89.654). Updated through the day.
Growing snapshot for Boulder Junction
Last spring frost
May 25
First fall frost
Sep 21
Growing season
117 days
Hardiness zone
4a
More local growing data for Boulder Junction: nearby ZIP 54512 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rest Lake, Wi (10.7 mi from Boulder Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.