Boulder Junction, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder Junction, a community in Vilas County, Wisconsin.
This Afternoon
64°F
Rain Showers
Rain showers and areas of fog before 4pm, then areas of fog and scattered rain showers. Cloudy. High near 64, with temperatures falling to around 62 in the afternoon. South wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Boulder Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Rain Showers | 7 mph S | 99% |
| Tonight | 56°F | Rain Showers | 6 mph SE | 96% |
| Wednesday | 61°F | Rain Showers | 7 mph SSE | 91% |
| Wednesday Night | 40°F | Rain Showers | 7 mph W | 94% |
| Thursday | 44°F | Rain Showers | 9 to 15 mph N | 97% |
| Thursday Night | 28°F | Chance Rain And Snow Showers then Cloudy | 8 to 14 mph NNE | 27% |
| Friday | 41°F | Partly Sunny | 5 to 9 mph NNE | 5% |
| Friday Night | 25°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 6 mph WSW | 1% |
| Saturday Night | 30°F | Partly Cloudy | 5 mph WSW | 13% |
| Sunday | 50°F | Slight Chance Rain Showers | 5 to 9 mph WNW | 17% |
| Sunday Night | 31°F | Partly Cloudy | 2 to 6 mph WSW | 11% |
| Monday | 52°F | Partly Sunny | 3 to 12 mph SW | 4% |
| Monday Night | 34°F | Partly Cloudy | 8 mph W | 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 Nov 3, 2026.