S
M
T
W
T
F
S
30
72°
63°
31
82°
52°
1
78°
50°
2
77°
48°
3
77°
60°
4
76°
60°
5
79°
59°
6
76°
57°
7
71°
55°
8
72°
54°
9
71°
48°
10
68°
47°
11
68°
47°
12
73°
52°
13
70°
52°
14
71°
52°
15
71°
51°
16
70°
50°
17
70°
51°
18
68°
51°
19
66°
50°
20
70°
50°
21
70°
49°
22
69°
50°
23
69°
50°
24
70°
51°
25
69°
50°
26
68°
49°
27
69°
50°
28
69°
48°
29
66°
47°
30
65°
48°
1
67°
49°
2
67°
47°
3
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mountain Iron
Mountain Iron's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 46° and 60°. The average high for September is 71° with an average low of 51°. 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.
