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Iron River, WI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Iron River, a community in Bayfield County, Wisconsin.

Today
62°F
Cloudy
Cloudy, with a high near 62. East wind around 5 mph.

7-day forecast for Iron River

WhenTempForecastWindPrecip
Today 62°F Cloudy 5 mph E 10%
Tonight 49°F Mostly Cloudy then Patchy Fog 0 to 5 mph NE 6%
Sunday 60°F Mostly Cloudy 5 to 15 mph NE 3%
Sunday Night 42°F Mostly Cloudy 5 to 10 mph E 0%
Monday 60°F Mostly Sunny 5 to 10 mph E 0%
Monday Night 39°F Partly Cloudy 5 to 10 mph E 0%
Tuesday 65°F Sunny 0 to 5 mph E 0%
Tuesday Night 39°F Mostly Clear 5 mph SE 0%
Wednesday 67°F Sunny 0 to 5 mph SE 0%
Wednesday Night 43°F Mostly Clear 0 to 5 mph SE 2%
Thursday 69°F Mostly Sunny 0 to 5 mph SE 2%
Thursday Night 45°F Partly Cloudy 0 to 5 mph SE 2%
Friday 71°F Mostly Sunny 0 to 5 mph SE 2%
Friday Night 48°F Partly Cloudy 5 mph SE 7%

Forecast source: National Weather Service (api.weather.gov) for Iron River (46.579, -91.400). Updated through the day.

Growing snapshot for Iron River

Last spring frost
May 24
First fall frost
Sep 26
Growing season
124 days
Hardiness zone
4a

More local growing data for Iron River: nearby ZIP 54847 weather · frost dates · planting calendar · Wisconsin frost dates

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Climate data from the nearest NOAA station, Brule Rs, Wi (9.6 mi from Iron River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.