Port Austin, MI Weather & Growing Conditions
Tonight
58°F
Mostly Cloudy
Mostly cloudy. Low around 58, with temperatures rising to around 60 overnight. South wind around 10 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Mostly Cloudy | 10 mph S | 4% |
| Wednesday | 69°F | Light Rain | 9 to 16 mph S | 88% |
| Wednesday Night | 49°F | Light Rain Likely then Mostly Cloudy | 9 to 15 mph SSW | 72% |
| Thursday | 58°F | Mostly Cloudy then Chance Light Rain | 10 to 15 mph SW | 40% |
| Thursday Night | 42°F | Light Rain Likely | 5 to 9 mph W | 66% |
| Friday | 52°F | Light Rain Likely | 7 to 16 mph N | 71% |
| Friday Night | 38°F | Light Rain Likely | 12 to 15 mph N | 68% |
| Saturday | 50°F | Chance Light Rain | 8 to 12 mph NW | 29% |
| Saturday Night | 34°F | Partly Cloudy | 8 mph W | 7% |
| Sunday | 53°F | Mostly Sunny then Slight Chance Light Rain | 8 to 13 mph W | 17% |
| Sunday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 12 mph WNW | 17% |
| Monday | 54°F | Partly Sunny | 10 to 15 mph W | 14% |
| Monday Night | 39°F | Partly Cloudy | 14 mph WSW | 14% |
| Tuesday | 54°F | Mostly Sunny | 13 to 16 mph W | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Austin, MI
Last spring frost
May 4
First fall frost
Oct 26
Growing season
172 days
Hardiness zone
6a
Explore more for Port Austin, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Port Austin Wwtp, Mi (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.