S
M
T
W
T
F
S
30
69°
40°
31
68°
40°
1
66°
41°
2
66°
40°
3
67°
41°
4
68°
39°
5
66°
40°
6
66°
44°
7
67°
45°
8
66°
44°
9
68°
43°
10
68°
42°
11
64°
40°
12
63°
41°
13
65°
44°
14
71°
45°
15
70°
44°
16
72°
45°
17
71°
46°
18
72°
45°
19
62°
36°
20
59°
34°
21
Hist. Avg.
63°
39°
22
Hist. Avg.
63°
38°
23
Hist. Avg.
62°
38°
24
Hist. Avg.
62°
38°
25
Hist. Avg.
61°
38°
26
Hist. Avg.
61°
37°
27
Hist. Avg.
61°
37°
28
Hist. Avg.
60°
37°
29
Hist. Avg.
60°
36°
30
Hist. Avg.
59°
36°
1
Hist. Avg.
59°
36°
2
Hist. Avg.
58°
35°
3
Hist. Avg.
58°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Iron River
Iron River's September 2026 forecast shows daily high temperatures ranging from 59° to 72°, with overnight lows between 34° and 46°. The average high for September is 67° with an average low of 42°. 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.
