Mellen, WI Weather & Growing Conditions
Today
75°F
Mostly Sunny
Mostly sunny, with a high near 75. Northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 5 to 10 mph NW | 0% |
| Tonight | 49°F | Mostly Cloudy | 0 to 5 mph W | 2% |
| Wednesday | 76°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 55°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 82°F | Sunny | 5 to 10 mph SW | 2% |
| Thursday Night | 63°F | Mostly Clear | 10 mph SW | 2% |
| Friday | 84°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 17% |
| Friday Night | 59°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 29% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 22% |
| Saturday Night | 58°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph W | 49% |
| Sunday | 77°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph W | 44% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 25% |
| Monday | 76°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 22% |
| Monday Night | 56°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mellen, WI
Last spring frost
May 26
First fall frost
Sep 27
Growing season
125 days
Hardiness zone
4a
Explore more for Mellen, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Mellen 4 Ne, Wi (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.