S
M
T
W
T
F
S
30
75°
53°
31
75°
54°
1
76°
51°
2
71°
53°
3
75°
53°
4
74°
52°
5
75°
53°
6
75°
52°
7
74°
44°
8
66°
42°
9
63°
49°
10
66°
50°
11
63°
47°
12
67°
51°
13
71°
50°
14
70°
52°
15
70°
50°
16
71°
46°
17
Hist. Avg.
64°
44°
18
Hist. Avg.
64°
44°
19
Hist. Avg.
63°
43°
20
Hist. Avg.
63°
43°
21
Hist. Avg.
62°
43°
22
Hist. Avg.
62°
42°
23
Hist. Avg.
62°
42°
24
Hist. Avg.
61°
41°
25
Hist. Avg.
60°
41°
26
Hist. Avg.
60°
40°
27
Hist. Avg.
60°
40°
28
Hist. Avg.
59°
40°
29
Hist. Avg.
59°
39°
30
Hist. Avg.
58°
39°
1
Hist. Avg.
58°
38°
2
Hist. Avg.
57°
38°
3
Hist. Avg.
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mountain Iron
Mountain Iron's September 2026 forecast shows daily high temperatures ranging from 63° to 76°, with overnight lows between 42° and 54°. The average high for September is 71° with an average low of 50°. 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 Mountain Iron. See also: October | November | December.
