Au Sable, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Au Sable, a community in Iosco County, Michigan.
This Afternoon
65°F
Mostly Cloudy
Mostly cloudy. High near 65, with temperatures falling to around 63 in the afternoon. Northeast wind around 10 mph.
7-day forecast for Au Sable
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Mostly Cloudy | 10 mph NE | 1% |
| Tonight | 50°F | Mostly Cloudy | 5 to 10 mph E | 3% |
| Saturday | 65°F | Scattered Rain Showers | 5 to 10 mph SE | 29% |
| Saturday Night | 53°F | Scattered Rain Showers | 5 mph E | 50% |
| Sunday | 65°F | Scattered Rain Showers then Partly Sunny | 5 to 15 mph NE | 42% |
| Sunday Night | 49°F | Mostly Cloudy | 10 to 15 mph NE | 4% |
| Monday | 60°F | Mostly Cloudy | 15 mph NE | 0% |
| Monday Night | 48°F | Mostly Cloudy | 10 to 15 mph NE | 1% |
| Tuesday | 61°F | Partly Sunny | 10 to 20 mph NE | 6% |
| Tuesday Night | 49°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 20 mph E | 17% |
| Wednesday | 63°F | Chance Rain Showers | 10 to 15 mph E | 38% |
| Wednesday Night | 50°F | Chance Rain Showers | 5 to 10 mph E | 38% |
| Thursday | 65°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 15% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Au Sable (44.413, -83.339). Updated through the day.
Growing snapshot for Au Sable
Last spring frost
May 8
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
5b
More local growing data for Au Sable: nearby ZIP 48750 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, E Tawas, Mi (10.6 mi from Au Sable). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.