S
M
T
W
T
F
S
30
65°
60°
31
66°
59°
1
76°
63°
2
75°
59°
3
76°
58°
4
66°
58°
5
73°
57°
6
74°
55°
7
77°
55°
8
72°
64°
9
75°
64°
10
70°
50°
11
74°
50°
12
77°
59°
13
65°
53°
14
65°
47°
15
71°
54°
16
67°
49°
17
70°
50°
18
58°
46°
19
62°
46°
20
65°
50°
21
55°
46°
22
58°
47°
23
61°
54°
24
63°
49°
25
68°
50°
26
67°
48°
27
71°
49°
28
70°
51°
29
69°
50°
30
65°
58°
1
65°
54°
2
61°
48°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Ignace
St. Ignace's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 St. Ignace. See also: October | November | December.
