Munising, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Munising, a city in Alger County, Michigan.
Tonight
44°F
Mostly Cloudy
Mostly cloudy, with a low around 44. East wind around 5 mph.
7-day forecast for Munising
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Mostly Cloudy | 5 mph E | 3% |
| Saturday | 67°F | Mostly Sunny | 5 mph SE | 4% |
| Saturday Night | 47°F | Mostly Cloudy | 0 to 5 mph NE | 1% |
| Sunday | 64°F | Partly Sunny | 10 to 15 mph N | 0% |
| Sunday Night | 44°F | Mostly Cloudy | 5 to 15 mph NE | 0% |
| Monday | 61°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Monday Night | 42°F | Partly Cloudy | 5 to 10 mph E | 0% |
| Tuesday | 64°F | Sunny | 5 mph E | 0% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph E | 3% |
| Wednesday | 66°F | Sunny | 5 mph E | 6% |
| Wednesday Night | 46°F | Partly Cloudy | 5 mph SE | 6% |
| Thursday | 68°F | Mostly Sunny | 5 mph E | 1% |
| Thursday Night | 47°F | Partly Cloudy | 0 to 5 mph SE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Munising (46.431, -86.619). Updated through the day.
Growing snapshot for Munising
Last spring frost
May 16
First fall frost
Oct 14
Growing season
148 days
Hardiness zone
5b
More local growing data for Munising: nearby ZIP 49862 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Munising, Mi (3.2 mi from Munising). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.