Munising, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Munising, a city in Alger County, Michigan.
This Afternoon
60°F
Patchy Fog
Patchy fog and showers and thunderstorms likely. Cloudy, with a high near 60. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Munising
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Patchy Fog | 10 mph S | 72% |
| Tonight | 57°F | Patchy Fog | 10 mph S | 88% |
| Wednesday | 61°F | Rain Showers | 10 to 15 mph S | 94% |
| Wednesday Night | 49°F | Chance Rain Showers | 10 mph S | 49% |
| Thursday | 52°F | Rain Showers | 5 to 20 mph NW | 99% |
| Thursday Night | 34°F | Rain Showers | 20 to 30 mph N | 99% |
| Friday | 43°F | Slight Chance Rain Showers | 10 to 15 mph N | 24% |
| Friday Night | 32°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph N | 24% |
| Saturday | 46°F | Mostly Sunny | 5 mph W | 2% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph SW | 4% |
| Sunday | 50°F | Slight Chance Rain Showers | 5 to 10 mph NW | 18% |
| Sunday Night | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NW | 18% |
| Monday | 52°F | Partly Sunny | 10 mph SW | 8% |
| Monday Night | 38°F | Mostly Cloudy | 10 to 15 mph W | 8% |
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 Nov 4, 2026.