Big Bay, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Bay, a community in Marquette County, Michigan.
This Afternoon
64°F
Partly Sunny
Partly sunny, with a high near 64. Southeast wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Big Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Partly Sunny | 10 mph SE | 11% |
| Tonight | 51°F | Mostly Cloudy | 0 to 10 mph SW | 14% |
| Sunday | 60°F | Slight Chance Rain Showers | 10 to 20 mph NE | 23% |
| Sunday Night | 47°F | Mostly Cloudy | 15 to 20 mph NE | 0% |
| Monday | 60°F | Partly Sunny | 10 to 15 mph E | 0% |
| Monday Night | 46°F | Mostly Clear | 5 to 10 mph E | 0% |
| Tuesday | 62°F | Sunny | 5 to 15 mph SE | 0% |
| Tuesday Night | 48°F | Mostly Clear | 5 to 15 mph SE | 0% |
| Wednesday | 63°F | Sunny | 5 to 15 mph SE | 1% |
| Wednesday Night | 49°F | Mostly Clear | 5 to 10 mph SE | 1% |
| Thursday | 65°F | Sunny | 0 to 10 mph SE | 1% |
| Thursday Night | 51°F | Mostly Clear | 0 to 10 mph S | 2% |
| Friday | 68°F | Sunny | 0 to 5 mph SE | 2% |
| Friday Night | 53°F | Mostly Clear | 5 mph SE | 1% |
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 Sep 19, 2026.