S
M
T
W
T
F
S
30
72°
51°
31
73°
52°
1
73°
50°
2
71°
50°
3
73°
51°
4
73°
50°
5
74°
53°
6
72°
52°
7
70°
50°
8
72°
54°
9
73°
47°
10
70°
47°
11
72°
50°
12
75°
52°
13
72°
48°
14
68°
53°
15
74°
54°
16
77°
55°
17
75°
53°
18
75°
44°
19
70°
43°
20
66°
43°
21
64°
46°
22
66°
50°
23
72°
50°
24
66°
49°
25
66°
41°
26
67°
40°
27
63°
41°
28
61°
40°
29
61°
41°
30
62°
46°
1
62°
46°
2
Hist. Avg.
64°
41°
3
Hist. Avg.
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nekoosa
Nekoosa's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 40° and 55°. The average high for September is 70° 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 Nekoosa. See also: October | November | December.