S
M
T
W
T
F
S
30
71°
53°
31
67°
50°
1
67°
52°
2
70°
57°
3
68°
57°
4
74°
58°
5
74°
57°
6
72°
58°
7
74°
47°
8
66°
55°
9
69°
46°
10
70°
45°
11
63°
49°
12
68°
55°
13
69°
44°
14
68°
40°
15
61°
43°
16
61°
43°
17
64°
48°
18
63°
52°
19
61°
51°
20
69°
51°
21
69°
50°
22
71°
53°
23
72°
53°
24
70°
52°
25
70°
50°
26
69°
39°
27
64°
37°
28
57°
37°
29
56°
39°
30
57°
38°
1
56°
41°
2
59°
40°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tomahawk
Tomahawk's September 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 37° and 58°. The average high for September is 66° with an average low of 48°. 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 Tomahawk. See also: October | November | December.