Mosinee, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mosinee, a city in Marathon County, Wisconsin.
Today
61°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 61. East wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mosinee
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Rain Showers Likely | 13 mph E | 65% |
| Tonight | 50°F | Chance Rain Showers then Mostly Cloudy | 6 to 10 mph NE | 42% |
| Sunday | 66°F | Mostly Sunny | 8 to 13 mph NE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 10 mph NE | 0% |
| Monday | 61°F | Mostly Cloudy | 12 mph ENE | 2% |
| Monday Night | 39°F | Mostly Cloudy | 6 to 9 mph ENE | 1% |
| Tuesday | 63°F | Sunny | 7 to 12 mph ENE | 2% |
| Tuesday Night | 40°F | Mostly Clear | 5 to 8 mph ENE | 2% |
| Wednesday | 66°F | Sunny | 5 to 9 mph E | 1% |
| Wednesday Night | 42°F | Mostly Clear | 3 to 7 mph ENE | 1% |
| Thursday | 67°F | Mostly Sunny | 6 mph ENE | 4% |
| Thursday Night | 44°F | Partly Cloudy | 1 to 5 mph E | 2% |
| Friday | 71°F | Mostly Sunny | 2 to 6 mph E | 3% |
| Friday Night | 45°F | Partly Cloudy | 5 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mosinee (44.792, -89.684). Updated through the day.
Growing snapshot for Mosinee
Last spring frost
May 6
First fall frost
Oct 4
Growing season
150 days
Hardiness zone
5a
More local growing data for Mosinee: nearby ZIP 54455 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Abbotsford
Athens
Colby
Edgar
Eland
Elderon
Fenwood
Hatley
Knowlton
Kronenwetter
Maine
Marathon City
Rib Mountain
Rothschild
Schofield
Stratford
Wausau
Weston
Climate data from the nearest NOAA station, Wausau Dwtn Ap, Wi (11.4 mi from Mosinee). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.