Boulder Junction, WI Weather & Growing Conditions
Today
61°F
Rain Showers
Rain showers and areas of fog. Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. South southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Rain Showers | 7 mph SSE | 86% |
| Tonight | 36°F | Rain Showers | 3 to 12 mph WSW | 88% |
| Thursday | 43°F | Rain Showers then Chance Rain And Snow Showers | 15 mph N | 85% |
| Thursday Night | 24°F | Chance Rain And Snow Showers then Cloudy | 7 to 14 mph N | 43% |
| Friday | 40°F | Partly Sunny | 3 to 8 mph NNE | 8% |
| Friday Night | 23°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 43°F | Mostly Sunny | 0 to 6 mph W | 0% |
| Saturday Night | 27°F | Partly Cloudy | 6 mph WSW | 10% |
| Sunday | 48°F | Slight Chance Rain Showers | 7 to 10 mph WNW | 18% |
| Sunday Night | 28°F | Partly Cloudy | 2 to 6 mph WSW | 7% |
| Monday | 52°F | Partly Sunny | 5 to 12 mph SW | 1% |
| Monday Night | 32°F | Partly Cloudy | 5 to 8 mph W | 4% |
| Tuesday | 50°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 9 mph WNW | 15% |
| Tuesday Night | 29°F | Mostly Cloudy | 0 to 3 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boulder Junction, WI
Last spring frost
May 25
First fall frost
Sep 21
Growing season
117 days
Hardiness zone
4a
Explore more for Boulder Junction, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Rest Lake, Wi (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.