S
M
T
W
T
F
S
30
69°
63°
31
68°
64°
1
81°
66°
2
77°
59°
3
77°
56°
4
72°
56°
5
77°
55°
6
78°
51°
7
80°
52°
8
75°
59°
9
80°
64°
10
64°
46°
11
78°
44°
12
76°
56°
13
64°
51°
14
66°
42°
15
73°
54°
16
69°
45°
17
71°
49°
18
62°
46°
19
64°
48°
20
66°
42°
21
58°
43°
22
65°
45°
23
66°
47°
24
67°
46°
25
68°
48°
26
67°
51°
27
69°
49°
28
68°
52°
29
67°
53°
30
64°
51°
1
64°
52°
2
65°
42°
3
58°
49°
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 58° to 69°, with overnight lows between 42° and 53°. The average high for September is 65° with an average low of 48°. 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.
