S
M
T
W
T
F
S
30
76°
57°
31
74°
56°
1
75°
54°
2
74°
50°
3
74°
52°
4
73°
54°
5
75°
53°
6
75°
54°
7
73°
49°
8
68°
46°
9
64°
46°
10
65°
54°
11
69°
46°
12
70°
53°
13
71°
52°
14
67°
54°
15
70°
53°
16
72°
50°
17
Hist. Avg.
66°
44°
18
Hist. Avg.
66°
44°
19
Hist. Avg.
65°
44°
20
Hist. Avg.
65°
43°
21
Hist. Avg.
64°
43°
22
Hist. Avg.
64°
43°
23
Hist. Avg.
64°
42°
24
Hist. Avg.
63°
42°
25
Hist. Avg.
63°
42°
26
Hist. Avg.
62°
41°
27
Hist. Avg.
62°
41°
28
Hist. Avg.
61°
40°
29
Hist. Avg.
61°
40°
30
Hist. Avg.
60°
40°
1
Hist. Avg.
60°
39°
2
Hist. Avg.
59°
39°
3
Hist. Avg.
59°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lake Tomahawk
Lake Tomahawk's September 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 46° and 57°. The average high for September is 71° with an average low of 52°. 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 Lake Tomahawk. See also: October | November | December.