Clam Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clam Lake, a community in Ashland County, Wisconsin.
Today
59°F
Light Rain
Rain and patchy fog. Cloudy. High near 59, with temperatures falling to around 54 in the afternoon. South wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Clam Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Light Rain | 5 mph S | 79% |
| Tonight | 34°F | Light Rain | 0 to 10 mph NW | 82% |
| Thursday | 45°F | Light Rain Likely | 10 mph N | 56% |
| Thursday Night | 24°F | Chance Light Snow then Cloudy | 5 mph N | 26% |
| Friday | 42°F | Partly Sunny | 0 to 5 mph N | 0% |
| Friday Night | 20°F | Mostly Clear | 0 mph | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 28°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Sunday | 52°F | Sunny | 5 mph W | 2% |
| Sunday Night | 29°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 57°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Tuesday | 52°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Tuesday Night | 28°F | Partly Cloudy | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Clam Lake (46.154, -90.906). Updated through the day.
Growing snapshot for Clam Lake
Last spring frost
May 16
First fall frost
Sep 30
Growing season
136 days
Hardiness zone
4a
More local growing data for Clam Lake: nearby ZIP 54517 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Ashland
Bayfront
Butternut
Diaperville
Franks Field
Glidden
Jolmaville
Marengo
Mellen
New Odanah
Odanah
Park Falls
Climate data from the nearest NOAA station, Clam Lake 4W, Wi (4 mi from Clam Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.