Port Austin, MI Weather & Growing Conditions
Tonight
51°F
Chance Light Rain
A chance of rain before 2am. Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. East northeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Chance Light Rain | 7 mph ENE | 39% |
| Saturday | 66°F | Chance Rain Showers | 5 to 10 mph SE | 39% |
| Saturday Night | 53°F | Chance Rain Showers | 5 to 9 mph E | 47% |
| Sunday | 66°F | Slight Chance Rain Showers then Partly Sunny | 7 to 16 mph NE | 17% |
| Sunday Night | 51°F | Mostly Cloudy | 15 mph NE | 1% |
| Monday | 62°F | Mostly Cloudy | 17 mph NE | 1% |
| Monday Night | 50°F | Mostly Cloudy | 13 to 17 mph ENE | 2% |
| Tuesday | 62°F | Partly Sunny | 15 to 18 mph ENE | 7% |
| Tuesday Night | 50°F | Mostly Cloudy then Chance Rain Showers | 13 to 18 mph ENE | 28% |
| Wednesday | 64°F | Chance Rain Showers | 15 mph E | 43% |
| Wednesday Night | 51°F | Chance Rain Showers | 7 to 13 mph E | 36% |
| Thursday | 66°F | Slight Chance Rain Showers | 7 to 12 mph ENE | 17% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 9 mph NE | 10% |
| Friday | 66°F | Mostly Sunny | 6 to 10 mph NNE | 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 Sep 19, 2026.