Boulder Junction, WI Weather & Growing Conditions
This Afternoon
64°F
Areas Of Fog
Areas of fog and a chance of rain showers. Cloudy. High near 64, with temperatures falling to around 62 in the afternoon. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Areas Of Fog | 6 mph S | 53% |
| Tonight | 56°F | Rain Showers | 6 mph SSE | 96% |
| Wednesday | 61°F | Rain Showers | 7 mph SSE | 91% |
| Wednesday Night | 40°F | Rain Showers | 8 mph W | 93% |
| Thursday | 45°F | Rain Showers | 9 to 15 mph N | 96% |
| Thursday Night | 28°F | Chance Rain And Snow Showers then Cloudy | 9 to 14 mph NNE | 25% |
| Friday | 41°F | Partly Sunny | 5 to 10 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 | 32°F | Partly Cloudy | 2 to 6 mph WSW | 11% |
| Monday | 52°F | Partly Sunny | 5 to 10 mph SW | 4% |
| Monday Night | 34°F | Partly Cloudy | 8 mph W | 3% |
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 (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.