S
M
T
W
T
F
S
30
67°
47°
31
67°
49°
1
69°
50°
2
70°
51°
3
75°
51°
4
74°
50°
5
73°
51°
6
74°
50°
7
70°
49°
8
68°
48°
9
71°
50°
10
73°
49°
11
73°
49°
12
72°
48°
13
72°
49°
14
73°
49°
15
71°
48°
16
66°
47°
17
67°
46°
18
67°
46°
19
69°
47°
20
68°
47°
21
70°
42°
22
70°
41°
23
69°
38°
24
67°
40°
25
69°
37°
26
63°
42°
27
64°
44°
28
68°
45°
29
70°
42°
30
68°
33°
1
66°
33°
2
61°
36°
3
64°
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 61° to 75°, with overnight lows between 33° and 51°. The average high for September is 69° with an average low of 45°. 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.
