Mellen, WI Weather & Growing Conditions
Today
58°F
Light Rain
Rain and patchy fog. Cloudy. High near 58, with temperatures falling to around 54 in the afternoon. South wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Light Rain | 0 to 5 mph S | 80% |
| Tonight | 34°F | Light Rain | 0 to 15 mph NW | 79% |
| Thursday | 43°F | Light Rain Likely then Chance Rain And Snow | 10 to 15 mph N | 65% |
| Thursday Night | 25°F | Chance Rain And Snow | 5 to 10 mph N | 38% |
| Friday | 41°F | Partly Sunny | 0 to 5 mph N | 0% |
| Friday Night | 20°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 28°F | Partly Cloudy | 5 mph SW | 2% |
| Sunday | 51°F | Sunny | 5 mph W | 3% |
| Sunday Night | 30°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 | 5 mph W | 1% |
| Tuesday | 51°F | Mostly Sunny | 5 mph W | 2% |
| Tuesday Night | 29°F | Partly Cloudy | 0 mph | 2% |
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 Nov 4, 2026.