S
M
T
W
T
F
S
30
68°
56°
31
68°
54°
1
69°
56°
2
68°
57°
3
72°
58°
4
76°
59°
5
75°
58°
6
76°
58°
7
74°
48°
8
68°
57°
9
70°
49°
10
76°
46°
11
70°
51°
12
68°
57°
13
73°
45°
14
71°
43°
15
61°
44°
16
60°
46°
17
64°
51°
18
69°
52°
19
65°
51°
20
68°
52°
21
70°
48°
22
70°
55°
23
71°
52°
24
71°
54°
25
72°
48°
26
70°
39°
27
64°
37°
28
57°
38°
29
54°
42°
30
57°
40°
1
58°
46°
2
62°
45°
3
62°
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 54° to 76°, with overnight lows between 37° and 59°. The average high for September is 68° with an average low of 50°. 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.
