Au Sable, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Au Sable, a community in Iosco County, Michigan.
Today
83°F
Sunny
Sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind 5 to 15 mph.
7-day forecast for Au Sable
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 5 to 15 mph SW | 0% |
| Tonight | 64°F | Partly Cloudy | 5 to 15 mph SW | 1% |
| Wednesday | 79°F | Showers And Thunderstorms Likely | 5 to 10 mph SW | 69% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 68% |
| Thursday | 76°F | Rain Showers Likely | 5 mph NE | 68% |
| Thursday Night | 60°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph SE | 17% |
| Friday | 82°F | Sunny | 0 to 5 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 5 mph S | 4% |
| Saturday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 17% |
| Saturday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 36% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 15 mph SW | 38% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 43% |
| Monday | 81°F | Chance Rain Showers | 5 mph SW | 40% |
| Monday Night | 61°F | Chance Rain Showers | 5 mph NE | 42% |
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 Aug 4, 2026.