Harman US

Rock, MI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Rock, a community in Marquette County, Michigan.

Today
81°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 81, with temperatures falling to around 75 in the afternoon. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

7-day forecast for Rock

WhenTempForecastWindPrecip
Today 81°F Partly Sunny then Chance Showers And Thunderstorms 5 to 10 mph SW 52%
Tonight 55°F Chance Showers And Thunderstorms 0 to 5 mph N 35%
Wednesday 78°F Mostly Sunny 0 to 5 mph NW 9%
Wednesday Night 52°F Partly Cloudy 0 to 5 mph SE 2%
Thursday 81°F Sunny 0 to 10 mph SW 2%
Thursday Night 58°F Mostly Clear 5 to 10 mph S 2%
Friday 85°F Sunny 5 to 10 mph SW 14%
Friday Night 62°F Chance Showers And Thunderstorms 5 to 10 mph SW 35%
Saturday 83°F Mostly Sunny then Chance Showers And Thunderstorms 5 to 10 mph SW 37%
Saturday Night 59°F Chance Showers And Thunderstorms 0 to 5 mph S 42%
Sunday 81°F Chance Showers And Thunderstorms 5 to 10 mph W 42%
Sunday Night 56°F Chance Showers And Thunderstorms 0 to 10 mph N 40%
Monday 78°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 0 to 5 mph NW 23%
Monday Night 55°F Slight Chance Showers And Thunderstorms 0 to 5 mph N 26%

Forecast source: National Weather Service (api.weather.gov) for Rock (46.069, -87.162). Updated through the day.

Growing snapshot for Rock

Last spring frost
May 13
First fall frost
Oct 2
Growing season
141 days
Hardiness zone
5a

More local growing data for Rock: nearby ZIP 49880 weather · frost dates · planting calendar · Michigan frost dates

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Climate data from the nearest NOAA station, Ki Sawyer Wwtp, Mi (17.1 mi from Rock). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.