Ironwood, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ironwood, a city in Gogebic County, Michigan.
Today
74°F
Chance Showers And Thunderstorms then Partly Sunny
A chance of showers and thunderstorms before 9am. Partly sunny, with a high near 74. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
7-day forecast for Ironwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Chance Showers And Thunderstorms then Partly Sunny | 10 to 15 mph W | 37% |
| Tonight | 50°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Wednesday | 75°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 54°F | Mostly Clear | 5 mph S | 0% |
| Thursday | 82°F | Sunny | 10 to 15 mph SW | 3% |
| Thursday Night | 61°F | Mostly Clear | 10 mph SW | 4% |
| Friday | 84°F | Sunny then Slight Chance Showers And Thunderstorms | 10 to 15 mph SW | 18% |
| Friday Night | 59°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 48% |
| Saturday | 79°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 23% |
| Saturday Night | 57°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph W | 45% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 45% |
| Sunday Night | 55°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 26% |
| Monday | 76°F | Slight Chance Rain Showers | 0 to 5 mph W | 20% |
| Monday Night | 54°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 20% |
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 Aug 4, 2026.