Brown City, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brown City, a city in Sanilac County, Michigan.
Today
86°F
Sunny
Sunny, with a high near 86. South southwest wind 3 to 9 mph, with gusts as high as 18 mph.
7-day forecast for Brown City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 to 9 mph SSW | 0% |
| Tonight | 59°F | Mostly Clear | 3 to 10 mph S | 0% |
| Wednesday | 87°F | Sunny | 2 to 7 mph SSW | 1% |
| Wednesday Night | 63°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 68% |
| Thursday | 81°F | Showers And Thunderstorms | 2 to 6 mph W | 80% |
| Thursday Night | 60°F | Showers And Thunderstorms Likely | 0 to 5 mph NE | 65% |
| Friday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 38% |
| Friday Night | 61°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 mph S | 38% |
| Saturday | 88°F | Sunny | 2 to 9 mph SW | 9% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 28% |
| Sunday | 89°F | Chance Rain Showers | 3 to 14 mph SW | 29% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 6 to 12 mph WSW | 46% |
| Monday | 85°F | Chance Rain Showers | 8 mph W | 46% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 3 to 7 mph WSW | 48% |
Forecast source: National Weather Service (api.weather.gov) for Brown City (43.211, -82.988). Updated through the day.
Growing snapshot for Brown City
Last spring frost
May 12
First fall frost
Oct 5
Growing season
147 days
Hardiness zone
6a
More local growing data for Brown City: nearby ZIP 48416 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Applegate
Carsonville
Croswell
Deckerville
Forestville
Lexington
Marlette
Melvin
Minden City
Peck
Port Sanilac
Sandusky
Snover
Ubly
Climate data from the nearest NOAA station, Yale 1 Nnw, Mi (10.5 mi from Brown City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.