Mellen, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mellen, a city in Ashland County, Wisconsin.
Today
76°F
Showers And Thunderstorms Likely then Partly Sunny
Showers and thunderstorms likely before 9am. Partly sunny. High near 76, with temperatures falling to around 74 in the afternoon. West wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mellen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms Likely then Partly Sunny | 5 to 10 mph W | 57% |
| Tonight | 51°F | Partly Cloudy | 0 to 5 mph W | 2% |
| Wednesday | 77°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Thursday | 83°F | Sunny | 5 to 10 mph SW | 2% |
| Thursday Night | 62°F | Mostly Clear | 10 mph SW | 5% |
| Friday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 18% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 37% |
| Saturday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 23% |
| Saturday Night | 59°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph W | 48% |
| Sunday | 78°F | Chance Showers And Thunderstorms | 5 mph W | 45% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 26% |
| Monday | 77°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 21% |
| Monday Night | 56°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 20% |
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 Aug 4, 2026.