Marathon City, WI Weather & Growing Conditions
Today
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, with a high near 78. Heat index values as high as 78. West southwest wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Chance Showers And Thunderstorms | 8 to 12 mph WSW | 48% |
| Tonight | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph NW | 13% |
| Wednesday | 77°F | Mostly Sunny | 2 to 6 mph NNW | 1% |
| Wednesday Night | 52°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Thursday | 82°F | Sunny | 1 to 8 mph WSW | 0% |
| Thursday Night | 58°F | Mostly Clear | 6 mph SW | 0% |
| Friday | 85°F | Sunny | 5 to 12 mph SW | 5% |
| Friday Night | 62°F | Slight Chance Rain Showers | 7 to 10 mph SW | 22% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 15% |
| Saturday Night | 62°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph W | 45% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 43% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 2 to 8 mph N | 36% |
| Monday | 81°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 30% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 3 to 8 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marathon City, WI
Last spring frost
May 6
First fall frost
Oct 4
Growing season
150 days
Hardiness zone
4b
Explore more for Marathon City, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Wausau Dwtn Ap, Wi (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.