Mackinaw City, MI Weather & Growing Conditions
Today
69°F
Rain Showers Likely
Rain showers likely. Mostly cloudy. High near 69, with temperatures falling to around 63 in the afternoon. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Rain Showers Likely | 5 to 10 mph S | 60% |
| Tonight | 46°F | Rain Showers Likely | 10 to 15 mph SW | 60% |
| Thursday | 56°F | Rain Showers Likely | 10 to 15 mph W | 65% |
| Thursday Night | 32°F | Rain Showers | 10 to 15 mph N | 93% |
| Friday | 46°F | Rain Showers Likely | 15 mph N | 61% |
| Friday Night | 29°F | Slight Chance Rain And Snow Showers | 5 to 10 mph N | 36% |
| Saturday | 48°F | Sunny | 5 to 10 mph NW | 9% |
| Saturday Night | 32°F | Partly Cloudy | 5 to 10 mph W | 6% |
| Sunday | 51°F | Slight Chance Rain Showers | 10 to 15 mph W | 23% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph NW | 23% |
| Monday | 54°F | Partly Sunny | 5 to 10 mph W | 5% |
| Monday Night | 37°F | Slight Chance Rain Showers | 10 mph W | 15% |
| Tuesday | 53°F | Mostly Sunny | 10 to 15 mph NW | 9% |
| Tuesday Night | 33°F | Mostly Cloudy | 5 to 10 mph NW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mackinaw City, MI
Last spring frost
May 7
First fall frost
Oct 23
Growing season
167 days
Hardiness zone
5b
Explore more for Mackinaw City, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, St Ignace Mackinac Br, Mi (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.