Mosinee, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mosinee, a city in Marathon County, Wisconsin.
Tonight
57°F
Rain Showers
Rain showers and areas of fog. Cloudy. Low around 57, with temperatures rising to around 59 overnight. Southeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Mosinee
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain Showers | 9 mph SE | 93% |
| Wednesday | 61°F | Rain Showers | 12 mph S | 87% |
| Wednesday Night | 45°F | Rain Showers | 8 to 12 mph SW | 85% |
| Thursday | 49°F | Rain Showers | 8 to 15 mph NW | 86% |
| Thursday Night | 34°F | Slight Chance Rain Showers then Mostly Cloudy | 12 to 15 mph N | 24% |
| Friday | 45°F | Partly Sunny | 6 to 13 mph N | 3% |
| Friday Night | 27°F | Partly Cloudy | 3 mph NNW | 1% |
| Saturday | 48°F | Mostly Sunny | 1 to 7 mph W | 0% |
| Saturday Night | 32°F | Partly Cloudy | 6 mph W | 13% |
| Sunday | 53°F | Slight Chance Rain Showers then Mostly Sunny | 6 to 12 mph WNW | 15% |
| Sunday Night | 33°F | Mostly Clear | 5 to 8 mph W | 3% |
| Monday | 55°F | Mostly Sunny | 6 to 13 mph SW | 0% |
| Monday Night | 37°F | Partly Cloudy | 10 mph W | 0% |
| Tuesday | 54°F | Sunny | 8 to 12 mph WNW | 1% |
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 Nov 4, 2026.