Shell Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shell Lake, a city in Washburn County, Wisconsin.
Today
75°F
Mostly Sunny
Mostly sunny, with a high near 75. Northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Shell Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 10 mph NW | 14% |
| Tonight | 51°F | Mostly Clear | 0 to 10 mph W | 2% |
| Wednesday | 77°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 82°F | Sunny | 5 to 15 mph SW | 2% |
| Thursday Night | 61°F | Mostly Clear | 10 mph SW | 6% |
| Friday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 15% |
| Friday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 14% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 51% |
| Sunday | 81°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 44% |
| Sunday Night | 59°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 19% |
| Monday | 80°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 19% |
| Monday Night | 59°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 21% |
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 Aug 4, 2026.