Mass City, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mass City, a community in Ontonagon County, Michigan.
Today
76°F
Chance Rain Showers then Mostly Sunny
A chance of rain showers before 11am. Mostly sunny, with a high near 76. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
7-day forecast for Mass City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Chance Rain Showers then Mostly Sunny | 10 mph W | 32% |
| Tonight | 52°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Wednesday | 78°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 54°F | Mostly Clear | 0 to 5 mph S | 0% |
| Thursday | 86°F | Sunny | 5 mph SW | 3% |
| Thursday Night | 62°F | Mostly Clear | 5 mph SW | 5% |
| Friday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 18% |
| Friday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 37% |
| Saturday | 80°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph W | 23% |
| Saturday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 44% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 42% |
| Sunday Night | 55°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 27% |
| Monday | 79°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 16% |
| Monday Night | 54°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov) for Mass City (46.762, -89.085). Updated through the day.
Growing snapshot for Mass City
Last spring frost
May 23
First fall frost
Oct 1
Growing season
128 days
Hardiness zone
5a
More local growing data for Mass City: nearby ZIP 49929 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Greenland 6N, Mi (5.2 mi from Mass City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.