Iron River, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Iron River, a community in Bayfield County, Wisconsin.
This Afternoon
63°F
Mostly Cloudy
Mostly cloudy, with a high near 63. Northeast wind around 5 mph.
7-day forecast for Iron River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Mostly Cloudy | 5 mph NE | 5% |
| Tonight | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph NE | 18% |
| Sunday | 62°F | Mostly Cloudy | 5 to 15 mph NE | 8% |
| Sunday Night | 42°F | Mostly Cloudy | 5 to 10 mph E | 5% |
| Monday | 60°F | Partly Sunny | 5 to 10 mph E | 5% |
| Monday Night | 36°F | Partly Cloudy then Patchy Frost | 5 to 10 mph E | 0% |
| Tuesday | 63°F | Patchy Frost then Sunny | 5 to 10 mph E | 0% |
| Tuesday Night | 40°F | Mostly Clear | 0 to 10 mph E | 0% |
| Wednesday | 67°F | Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 44°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Thursday | 69°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph SE | 15% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph SE | 15% |
| Friday | 72°F | Partly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph SE | 4% |
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
Nearby towns & communities
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.