Sault Ste. Marie, MI Weather & Growing Conditions
This Afternoon
64°F
Showers And Thunderstorms Likely
A slight chance of rain showers before 4pm, then showers and thunderstorms likely. Mostly cloudy. High near 64, with temperatures falling to around 62 in the afternoon. Southeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Showers And Thunderstorms Likely | 10 mph SE | 68% |
| Tonight | 49°F | Showers And Thunderstorms | 5 to 10 mph S | 97% |
| Thursday | 53°F | Rain Showers | 5 to 10 mph SW | 95% |
| Thursday Night | 34°F | Rain Showers then Rain And Snow Showers | 15 mph N | 95% |
| Friday | 42°F | Rain And Snow Showers Likely | 10 to 15 mph N | 67% |
| Friday Night | 29°F | Slight Chance Rain And Snow Showers then Mostly Cloudy | 5 to 10 mph N | 24% |
| Saturday | 44°F | Sunny | 5 to 10 mph NW | 1% |
| Saturday Night | 32°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 49°F | Chance Rain Showers | 5 to 20 mph W | 27% |
| Sunday Night | 37°F | Chance Rain Showers then Partly Cloudy | 5 to 15 mph NW | 27% |
| Monday | 51°F | Partly Sunny | 5 to 15 mph W | 4% |
| Monday Night | 40°F | Slight Chance Rain Showers | 5 to 10 mph W | 15% |
| Tuesday | 50°F | Partly Sunny | 10 to 20 mph NW | 14% |
| Tuesday Night | 35°F | Mostly Cloudy | 5 to 15 mph NW | 14% |
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 Nov 4, 2026.