S
M
T
W
T
F
S
30
77°
60°
31
78°
59°
1
71°
58°
2
68°
58°
3
71°
57°
4
74°
59°
5
76°
59°
6
77°
58°
7
77°
59°
8
76°
57°
9
74°
57°
10
73°
56°
11
75°
56°
12
70°
55°
13
65°
55°
14
62°
44°
15
63°
49°
16
64°
51°
17
67°
50°
18
66°
47°
19
64°
52°
20
70°
53°
21
71°
52°
22
69°
44°
23
66°
46°
24
65°
50°
25
68°
51°
26
68°
45°
27
67°
40°
28
63°
39°
29
57°
42°
30
59°
47°
1
63°
43°
2
60°
48°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sault Ste. Marie
Sault Ste. Marie's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 39° and 60°. The average high for September is 68° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sault Ste. Marie. See also: October | November | December.
