S
M
T
W
T
F
S
30
85°
61°
31
81°
63°
1
80°
66°
2
80°
67°
3
87°
66°
4
87°
67°
5
86°
66°
6
84°
62°
7
86°
65°
8
83°
60°
9
79°
58°
10
78°
58°
11
78°
59°
12
82°
58°
13
81°
64°
14
84°
59°
15
77°
57°
16
76°
58°
17
77°
57°
18
78°
62°
19
82°
56°
20
82°
59°
21
80°
61°
22
83°
55°
23
78°
55°
24
76°
54°
25
76°
54°
26
77°
60°
27
80°
60°
28
80°
59°
29
81°
54°
30
77°
53°
1
73°
59°
2
79°
59°
3
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Neenah
Neenah's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 53° and 67°. The average high for September is 80° with an average low of 60°. 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 Neenah. See also: October | November | December.
