S
M
T
W
T
F
S
30
77°
59°
31
78°
57°
1
76°
56°
2
74°
57°
3
77°
58°
4
77°
58°
5
76°
57°
6
77°
57°
7
77°
56°
8
75°
54°
9
74°
54°
10
74°
55°
11
76°
54°
12
72°
53°
13
64°
48°
14
61°
44°
15
62°
51°
16
62°
50°
17
63°
45°
18
69°
48°
19
70°
50°
20
72°
51°
21
71°
51°
22
63°
39°
23
69°
42°
24
68°
45°
25
67°
49°
26
65°
40°
27
66°
35°
28
58°
38°
29
61°
43°
30
65°
45°
1
59°
40°
2
57°
47°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ironwood
Ironwood's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 35° and 59°. The average high for September is 69° 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 Ironwood. See also: October | November | December.