Ironwood, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ironwood, a city in Gogebic County, Michigan.
Today
63°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 63, with temperatures falling to around 58 in the afternoon. East wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Ironwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Chance Rain Showers | 5 mph E | 25% |
| Tonight | 42°F | Slight Chance Rain Showers then Patchy Fog | 0 to 5 mph NE | 19% |
| Sunday | 61°F | Chance Rain Showers then Partly Sunny | 5 to 15 mph NE | 29% |
| Sunday Night | 36°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Monday | 62°F | Partly Sunny | 5 to 10 mph E | 0% |
| Monday Night | 33°F | Mostly Clear | 5 to 10 mph E | 0% |
| Tuesday | 64°F | Sunny | 0 to 10 mph E | 0% |
| Tuesday Night | 35°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 67°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 38°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Thursday Night | 40°F | Partly Cloudy | 0 to 5 mph SE | 3% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph S | 3% |
| Friday Night | 42°F | Partly Cloudy | 5 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Ironwood (46.452, -90.150). Updated through the day.
Growing snapshot for Ironwood
Last spring frost
May 19
First fall frost
Sep 28
Growing season
130 days
Hardiness zone
4b
More local growing data for Ironwood: nearby ZIP 49938 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ironwood #2, Mi (4.2 mi from Ironwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.