S
M
T
W
T
F
S
30
75°
55°
31
78°
57°
1
74°
56°
2
74°
53°
3
78°
48°
4
66°
56°
5
76°
57°
6
83°
52°
7
78°
63°
8
70°
63°
9
67°
46°
10
75°
42°
11
77°
58°
12
62°
50°
13
60°
39°
14
61°
35°
15
62°
43°
16
65°
35°
17
65°
40°
18
64°
36°
19
64°
47°
20
61°
36°
21
63°
35°
22
66°
29°
23
68°
33°
24
55°
52°
25
66°
48°
26
69°
53°
27
64°
46°
28
67°
54°
29
61°
49°
30
64°
45°
1
62°
40°
2
61°
41°
3
56°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atikokan
Atikokan's September 2026 forecast shows daily high temperatures ranging from 55° to 69°, with overnight lows between 40° and 54°. The average high for September is 63° with an average low of 47°. 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 Atikokan. See also: October | November | December.
