Mackinac Island, MI Weather & Growing Conditions
This Afternoon
62°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 62, with temperatures falling to around 58 in the afternoon. Southeast wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Showers And Thunderstorms | 15 mph SE | 84% |
| Tonight | 49°F | Showers And Thunderstorms | 10 to 15 mph S | 93% |
| Thursday | 53°F | Rain Showers | 5 to 15 mph SW | 88% |
| Thursday Night | 36°F | Rain Showers | 15 mph N | 92% |
| Friday | 41°F | Rain And Snow Showers Likely | 15 mph N | 74% |
| Friday Night | 31°F | Chance Rain And Snow Showers then Mostly Cloudy | 10 to 15 mph N | 36% |
| Saturday | 46°F | Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 35°F | Mostly Clear | 5 to 10 mph W | 1% |
| Sunday | 52°F | Mostly Sunny then Slight Chance Rain Showers | 10 to 15 mph W | 15% |
| Sunday Night | 37°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 15 mph NW | 15% |
| Monday | 52°F | Partly Sunny | 5 to 15 mph W | 2% |
| Monday Night | 41°F | Slight Chance Rain Showers | 10 to 15 mph W | 15% |
| Tuesday | 53°F | Mostly Sunny | 10 to 15 mph NW | 4% |
| Tuesday Night | 36°F | Mostly Cloudy | 5 to 10 mph NW | 4% |
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 Nov 5, 2026.