Shell Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shell Lake, a city in Washburn County, Wisconsin.
Tonight
50°F
Rain Showers Likely
Rain showers likely and patchy fog. Cloudy, with a low around 50. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Shell Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Rain Showers Likely | 10 mph E | 71% |
| Saturday | 64°F | Chance Rain Showers | 10 mph E | 39% |
| Saturday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 18% |
| Sunday | 69°F | Partly Sunny | 10 to 15 mph NE | 0% |
| Sunday Night | 42°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 66°F | Partly Sunny | 5 to 10 mph E | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 mph E | 1% |
| Tuesday | 66°F | Mostly Sunny | 5 mph E | 1% |
| Tuesday Night | 40°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Wednesday | 68°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 44°F | Partly Cloudy | 0 mph | 5% |
| Thursday | 71°F | Mostly Sunny | 0 to 5 mph S | 9% |
| Thursday Night | 47°F | Partly Cloudy | 0 to 5 mph S | 7% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Shell Lake (45.726, -91.910). Updated through the day.
Growing snapshot for Shell Lake
Last spring frost
May 14
First fall frost
Sep 28
Growing season
135 days
Hardiness zone
4a
More local growing data for Shell Lake: nearby ZIP 54871 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Spooner Ag Res Stn, Wi (7.9 mi from Shell Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.