Iron Junction, MN Weather & Growing Conditions
Overnight
47°F
Light Rain
Rain before 5am, then rain and patchy fog. Cloudy, with a low around 47. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Light Rain | 10 to 15 mph N | 86% |
| Wednesday | 50°F | Rain | 15 mph N | 96% |
| Wednesday Night | 34°F | Light Rain | 15 mph N | 92% |
| Thursday | 41°F | Mostly Cloudy | 10 to 15 mph N | 4% |
| Thursday Night | 20°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Friday | 41°F | Sunny | 0 mph | 0% |
| Friday Night | 20°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 10 mph SW | 5% |
| Saturday Night | 28°F | Partly Cloudy | 5 mph W | 10% |
| Sunday | 48°F | Mostly Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 28°F | Mostly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 53°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Monday Night | 29°F | Partly Cloudy | 5 mph W | 1% |
| Tuesday | 48°F | Mostly Sunny | 5 to 10 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Iron Junction, MN
Last spring frost
Jun 5
First fall frost
Sep 8
Growing season
93 days
Hardiness zone
3b
Explore more for Iron Junction, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Hibbing Chisholm Hibbing Ap, Mn (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.