Shell Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shell Lake, a city in Washburn County, Wisconsin.
Overnight
52°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 52, with temperatures rising to around 58 overnight. East wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Shell Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Chance Rain Showers | 10 mph E | 36% |
| Saturday | 61°F | Chance Rain Showers then Patchy Fog | 10 mph E | 34% |
| Saturday Night | 49°F | Patchy Fog | 5 mph NE | 7% |
| Sunday | 64°F | Partly Sunny | 5 to 15 mph NE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 63°F | Partly Sunny | 5 to 10 mph E | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 mph E | 2% |
| Tuesday | 67°F | Sunny | 5 mph E | 2% |
| Tuesday Night | 38°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Wednesday | 69°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 42°F | Mostly Clear | 0 to 5 mph SE | 2% |
| Thursday | 70°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Thursday Night | 45°F | Partly Cloudy | 0 mph | 3% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph SE | 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.