S
M
T
W
T
F
S
30
77°
53°
31
78°
51°
1
76°
50°
2
73°
51°
3
76°
52°
4
77°
52°
5
77°
51°
6
76°
51°
7
77°
50°
8
75°
49°
9
74°
49°
10
74°
48°
11
76°
49°
12
72°
48°
13
65°
43°
14
62°
38°
15
63°
45°
16
63°
44°
17
64°
40°
18
69°
40°
19
75°
34°
20
72°
35°
21
61°
32°
22
60°
33°
23
61°
38°
24
67°
45°
25
68°
44°
26
68°
46°
27
69°
45°
28
68°
39°
29
68°
39°
30
60°
31°
1
63°
30°
2
53°
28°
3
53°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Iron River
Iron River's September 2026 forecast shows daily high temperatures ranging from 53° to 78°, with overnight lows between 28° and 53°. The average high for September is 69° with an average low of 43°. 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 Iron River. See also: October | November | December.
