S
M
T
W
T
F
S
30
73°
49°
31
73°
49°
1
63°
46°
2
64°
48°
3
69°
49°
4
71°
50°
5
72°
50°
6
71°
49°
7
72°
50°
8
72°
49°
9
70°
48°
10
69°
47°
11
69°
47°
12
67°
46°
13
61°
46°
14
53°
34°
15
57°
42°
16
57°
44°
17
60°
38°
18
59°
40°
19
58°
44°
20
66°
47°
21
67°
44°
22
65°
34°
23
62°
35°
24
63°
43°
25
63°
43°
26
64°
31°
27
62°
30°
28
49°
29°
29
49°
29°
30
50°
39°
1
54°
31°
2
51°
29°
3
48°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Iroquois Falls
Iroquois Falls's September 2026 forecast shows daily high temperatures ranging from 48° to 73°, with overnight lows between 29° and 50°. The average high for September is 63° 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 Iroquois Falls. See also: October | November | December.
