Mellen, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mellen, a city in Ashland County, Wisconsin.
Today
65°F
Rain
Rain and areas of fog. Cloudy. High near 65, with temperatures falling to around 59 in the afternoon. Northwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Mellen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Rain | 5 mph NW | 86% |
| Tonight | 52°F | Light Rain | 5 mph NE | 77% |
| Wednesday | 58°F | Rain Likely | 5 mph NW | 73% |
| Wednesday Night | 39°F | Light Rain | 5 to 10 mph N | 86% |
| Thursday | 45°F | Light Rain | 10 to 15 mph N | 97% |
| Thursday Night | 28°F | Chance Light Rain then Slight Chance Light Snow | 5 to 10 mph NE | 29% |
| Friday | 42°F | Partly Sunny | 0 to 5 mph NE | 8% |
| Friday Night | 25°F | Mostly Cloudy | 0 mph | 2% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 29°F | Slight Chance Light Rain | 0 to 5 mph SW | 24% |
| Sunday | 48°F | Slight Chance Light Rain then Partly Sunny | 5 mph W | 16% |
| Sunday Night | 30°F | Partly Cloudy | 0 to 5 mph W | 12% |
| Monday | 52°F | Partly Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 32°F | Partly Cloudy | 5 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mellen (46.324, -90.660). Updated through the day.
Growing snapshot for Mellen
Last spring frost
May 26
First fall frost
Sep 27
Growing season
125 days
Hardiness zone
4b
More local growing data for Mellen: nearby ZIP 54846 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Ashland
Bayfront
Butternut
Clam Lake
Diaperville
Franks Field
Glidden
Jolmaville
Marengo
New Odanah
Odanah
Park Falls
Climate data from the nearest NOAA station, Mellen 4 Ne, Wi (3.8 mi from Mellen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.