Big Bay, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Bay, a community in Marquette County, Michigan.
Tonight
56°F
Rain Showers
Rain showers and patchy fog. Cloudy, with a low around 56. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Big Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Rain Showers | 5 to 10 mph SE | 91% |
| Wednesday | 64°F | Rain Showers | 10 to 15 mph SE | 97% |
| Wednesday Night | 48°F | Rain Showers | 5 to 10 mph SW | 79% |
| Thursday | 50°F | Rain Showers | 5 to 35 mph N | 100% |
| Thursday Night | 33°F | Rain Showers | 25 to 35 mph N | 98% |
| Friday | 43°F | Slight Chance Rain Showers | 10 to 25 mph NE | 19% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NW | 11% |
| Saturday | 47°F | Mostly Sunny | 5 mph W | 2% |
| Saturday Night | 38°F | Partly Cloudy | 5 to 10 mph SW | 6% |
| Sunday | 50°F | Partly Sunny then Slight Chance Rain Showers | 10 to 15 mph W | 16% |
| Sunday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 16% |
| Monday | 52°F | Partly Sunny | 10 to 15 mph SW | 6% |
| Monday Night | 41°F | Mostly Cloudy | 15 mph W | 10% |
| Tuesday | 49°F | Mostly Sunny | 15 to 20 mph NW | 11% |
Forecast source: National Weather Service (api.weather.gov) for Big Bay (46.817, -87.708). Updated through the day.
Growing snapshot for Big Bay
Last spring frost
May 22
First fall frost
Oct 6
Growing season
137 days
Hardiness zone
5b
More local growing data for Big Bay: nearby ZIP 49808 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Gwinn
Harvey
Ishpeming
K. I. Sawyer
Marquette
Michigamme
Negaunee
Palmer
Republic
Rock
Trowbridge Park
West Ishpeming
Climate data from the nearest NOAA station, Big Bay 1Nw, Mi (4.9 mi from Big Bay). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.