Mass City, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mass City, a community in Ontonagon County, Michigan.
This Afternoon
68°F
Rain Showers
Rain showers. Cloudy. High near 68, with temperatures falling to around 64 in the afternoon. Southwest wind 0 to 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Mass City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers | 0 to 5 mph SW | 95% |
| Tonight | 56°F | Rain Showers | 5 mph SE | 88% |
| Wednesday | 65°F | Rain Showers | 5 mph SE | 93% |
| Wednesday Night | 44°F | Rain Showers | 5 mph SW | 95% |
| Thursday | 46°F | Rain Showers | 5 to 10 mph N | 99% |
| Thursday Night | 31°F | Rain Showers | 5 to 15 mph N | 86% |
| Friday | 42°F | Partly Sunny | 5 mph N | 4% |
| Friday Night | 26°F | Partly Cloudy | 0 mph | 3% |
| Saturday | 48°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Saturday Night | 32°F | Partly Cloudy then Slight Chance Rain Showers | 0 to 5 mph SW | 15% |
| Sunday | 50°F | Slight Chance Rain Showers | 5 to 10 mph W | 15% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph W | 15% |
| Monday | 55°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Monday Night | 36°F | Partly Cloudy | 5 to 10 mph W | 4% |
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 Nov 3, 2026.