Mackinac Island, MI Weather & Growing Conditions
This Afternoon
62°F
Mostly Sunny
Mostly sunny, with a high near 62. East wind around 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Mostly Sunny | 15 mph E | 7% |
| Tonight | 51°F | Mostly Cloudy | 5 to 10 mph E | 9% |
| Sunday | 64°F | Mostly Sunny | 5 to 10 mph NE | 9% |
| Sunday Night | 46°F | Partly Cloudy | 10 to 15 mph NE | 0% |
| Monday | 54°F | Partly Sunny | 10 mph E | 0% |
| Monday Night | 45°F | Partly Cloudy | 5 to 10 mph E | 0% |
| Tuesday | 57°F | Mostly Sunny | 10 to 15 mph E | 0% |
| Tuesday Night | 48°F | Mostly Clear | 5 to 10 mph E | 1% |
| Wednesday | 62°F | Sunny | 10 to 15 mph E | 4% |
| Wednesday Night | 49°F | Partly Cloudy | 10 to 15 mph E | 4% |
| Thursday | 63°F | Mostly Sunny | 10 to 15 mph E | 4% |
| Thursday Night | 48°F | Partly Cloudy | 5 to 10 mph E | 3% |
| Friday | 67°F | Mostly Sunny | 5 mph E | 2% |
| Friday Night | 49°F | Partly Cloudy | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mackinac Island, MI
Last spring frost
May 31
First fall frost
Sep 25
Growing season
116 days
Hardiness zone
5a
Explore more for Mackinac Island, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Pickford 3Ne, Mi (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.