Brown City, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brown City, a city in Sanilac County, Michigan.
Tonight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. South wind around 9 mph, with gusts as high as 22 mph.
7-day forecast for Brown City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 9 mph S | 3% |
| Wednesday | 68°F | Light Rain | 10 to 15 mph S | 90% |
| Wednesday Night | 50°F | Light Rain Likely then Mostly Cloudy | 7 to 14 mph SSW | 56% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Light Rain | 8 to 14 mph SW | 21% |
| Thursday Night | 43°F | Chance Light Rain | 2 to 7 mph W | 43% |
| Friday | 54°F | Light Rain Likely | 3 to 9 mph NW | 55% |
| Friday Night | 36°F | Chance Light Rain | 8 mph NNW | 49% |
| Saturday | 51°F | Chance Light Rain then Partly Sunny | 9 mph NW | 30% |
| Saturday Night | 30°F | Partly Cloudy | 5 mph W | 6% |
| Sunday | 55°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Sunday Night | 31°F | Partly Cloudy | 8 mph WNW | 14% |
| Monday | 56°F | Mostly Sunny | 6 to 12 mph W | 12% |
| Monday Night | 36°F | Partly Cloudy | 9 mph WSW | 9% |
| Tuesday | 58°F | Mostly Sunny | 8 to 13 mph W | 4% |
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 Nov 4, 2026.