S
M
T
W
T
F
S
30
74°
52°
31
74°
51°
1
72°
53°
2
71°
52°
3
73°
52°
4
72°
51°
5
71°
52°
6
71°
53°
7
70°
52°
8
71°
52°
9
72°
51°
10
71°
51°
11
70°
50°
12
69°
50°
13
70°
51°
14
71°
51°
15
74°
54°
16
76°
55°
17
75°
54°
18
75°
54°
19
67°
47°
20
66°
45°
21
Hist. Avg.
68°
49°
22
Hist. Avg.
68°
48°
23
Hist. Avg.
68°
48°
24
Hist. Avg.
67°
48°
25
Hist. Avg.
67°
47°
26
Hist. Avg.
66°
47°
27
Hist. Avg.
66°
46°
28
Hist. Avg.
65°
46°
29
Hist. Avg.
65°
45°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
45°
2
Hist. Avg.
63°
44°
3
Hist. Avg.
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Appleton
Appleton's September 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 45° and 55°. The average high for September is 72° 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 Appleton. See also: October | November | December.
