Mellen, WI Weather & Growing Conditions
Overnight
46°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a low around 46. Southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Slight Chance Rain Showers | 5 mph SE | 15% |
| Saturday | 60°F | Slight Chance Rain Showers | 5 mph E | 20% |
| Saturday Night | 45°F | Patchy Fog | 0 to 5 mph NE | 11% |
| Sunday | 60°F | Partly Sunny | 5 to 10 mph NE | 8% |
| Sunday Night | 35°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 60°F | Partly Sunny | 5 mph NE | 0% |
| Monday Night | 36°F | Mostly Clear | 0 to 5 mph E | 0% |
| Tuesday | 65°F | Sunny | 0 to 5 mph E | 0% |
| Tuesday Night | 35°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 68°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 38°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SE | 3% |
| Thursday Night | 40°F | Partly Cloudy | 0 to 5 mph SE | 3% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph S | 3% |
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 (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.