Sault Ste. Marie, MI Weather & Growing Conditions
This Afternoon
65°F
Mostly Sunny
Mostly sunny, with a high near 65. Southeast wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Mostly Sunny | 10 mph SE | 3% |
| Tonight | 47°F | Mostly Cloudy | 0 to 10 mph NE | 4% |
| Sunday | 66°F | Mostly Sunny | 5 to 10 mph N | 3% |
| Sunday Night | 42°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 60°F | Partly Sunny | 5 mph E | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 mph E | 0% |
| Tuesday | 63°F | Sunny | 5 to 10 mph E | 0% |
| Tuesday Night | 45°F | Mostly Clear | 5 to 10 mph E | 0% |
| Wednesday | 65°F | Sunny | 10 to 15 mph E | 3% |
| Wednesday Night | 47°F | Mostly Clear | 5 to 10 mph E | 4% |
| Thursday | 65°F | Mostly Sunny | 5 to 10 mph E | 3% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 10 mph E | 3% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 2% |
| Friday Night | 48°F | Partly Cloudy | 0 to 5 mph N | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sault Ste. Marie, MI
Last spring frost
May 9
First fall frost
Oct 11
Growing season
151 days
Hardiness zone
4b
Explore more for Sault Ste. Marie, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Sault Ste Marie Sanderson Fld, Mi (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.