Flat Rock, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Rock, a city in Wayne County, Michigan.
Today
82°F
Sunny
Sunny, with a high near 82. South wind around 8 mph.
7-day forecast for Flat Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 8 mph S | 0% |
| Tonight | 62°F | Mostly Clear | 2 to 8 mph SSW | 0% |
| Wednesday | 86°F | Sunny | 2 to 8 mph SW | 0% |
| Wednesday Night | 67°F | Partly Cloudy | 3 to 8 mph SW | 11% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 3 to 8 mph WSW | 60% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely | 2 to 8 mph WSW | 60% |
| Friday | 84°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 to 7 mph SW | 56% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 42% |
| Saturday | 87°F | Mostly Sunny | 3 to 10 mph SW | 8% |
| Saturday Night | 67°F | Mostly Clear then Slight Chance Rain Showers | 5 to 10 mph SW | 20% |
| Sunday | 89°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 14 mph SW | 20% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 8 to 14 mph SW | 44% |
| Monday | 87°F | Chance Rain Showers | 10 mph WSW | 44% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 9 mph WSW | 49% |
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 Aug 4, 2026.