S
M
T
W
T
F
S
30
76°
64°
31
91°
66°
1
91°
54°
2
88°
61°
3
83°
60°
4
84°
71°
5
86°
67°
6
86°
57°
7
82°
57°
8
80°
65°
9
84°
55°
10
81°
48°
11
81°
62°
12
77°
44°
13
63°
35°
14
62°
55°
15
69°
43°
16
65°
46°
17
68°
46°
18
65°
49°
19
64°
46°
20
65°
45°
21
67°
46°
22
66°
52°
23
67°
47°
24
63°
44°
25
64°
51°
26
68°
52°
27
68°
51°
28
67°
51°
29
64°
50°
30
63°
47°
1
58°
47°
2
57°
44°
3
62°
47°
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 57° to 81°, with overnight lows between 35° and 62°. 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.