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
70°F
Partly Sunny
Partly sunny. High near 70, with temperatures falling to around 67 in the afternoon. South wind around 10 mph.
7-day forecast for Au Sable
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Partly Sunny | 10 mph S | 3% |
| Tonight | 57°F | Mostly Cloudy | 5 to 10 mph S | 6% |
| Wednesday | 66°F | Rain Showers | 5 to 15 mph S | 86% |
| Wednesday Night | 49°F | Rain Showers then Mostly Cloudy | 10 to 15 mph S | 85% |
| Thursday | 57°F | Rain Showers Likely | 10 to 15 mph SW | 65% |
| Thursday Night | 41°F | Rain Showers | 5 to 10 mph NW | 86% |
| Friday | 50°F | Rain Showers | 10 to 15 mph N | 86% |
| Friday Night | 36°F | Rain Showers Likely | 10 to 15 mph N | 66% |
| Saturday | 50°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NW | 17% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 16% |
| Sunday Night | 35°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph NW | 16% |
| Monday | 54°F | Mostly Sunny | 5 to 15 mph W | 11% |
| Monday Night | 38°F | Partly Cloudy | 10 to 15 mph W | 11% |
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 Nov 4, 2026.