Flat Rock, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Rock, a city in Wayne County, Michigan.
Tonight
60°F
Partly Cloudy
Partly cloudy, with a low around 60. South southeast wind around 12 mph, with gusts as high as 23 mph.
7-day forecast for Flat Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Partly Cloudy | 12 mph SSE | 10% |
| Wednesday | 67°F | Light Rain | 12 to 17 mph S | 99% |
| Wednesday Night | 52°F | Light Rain Likely then Mostly Cloudy | 9 to 15 mph SSW | 70% |
| Thursday | 62°F | Partly Sunny | 10 to 16 mph SW | 11% |
| Thursday Night | 46°F | Mostly Cloudy then Slight Chance Light Rain | 5 to 9 mph W | 19% |
| Friday | 57°F | Chance Light Rain | 5 to 9 mph NW | 40% |
| Friday Night | 38°F | Chance Light Rain | 9 mph NW | 38% |
| Saturday | 54°F | Slight Chance Light Rain then Partly Sunny | 10 mph NW | 21% |
| Saturday Night | 35°F | Partly Cloudy | 6 mph W | 6% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 5 to 12 mph W | 15% |
| Sunday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 7 to 10 mph WNW | 15% |
| Monday | 58°F | Mostly Sunny | 7 to 12 mph W | 12% |
| Monday Night | 39°F | Partly Cloudy | 10 mph WSW | 12% |
| Tuesday | 60°F | Mostly Sunny | 9 to 13 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Flat Rock (42.098, -83.270). Updated through the day.
Growing snapshot for Flat Rock
Last spring frost
Apr 27
First fall frost
Oct 20
Growing season
176 days
Hardiness zone
6b
More local growing data for Flat Rock: nearby ZIP 48134 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Allen Park
Belleville
Dearborn
Dearborn Heights
Detroit
Ecorse
Garden City
Gibraltar
Grosse Pointe
Grosse Pointe Farms
Grosse Pointe Park
Grosse Pointe Woods
Hamtramck
Harper Woods
Highland Park
Inkster
Lincoln Park
Livonia
Melvindale
Plymouth
River Rouge
Riverview
Rockwood
Romulus
Southgate
Taylor
Trenton
Wayne
Westland
Woodhaven
Climate data from the nearest NOAA station, Carleton 2W, Mi (7.8 mi from Flat Rock). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.