S
M
T
W
T
F
S
30
91°
60°
31
92°
61°
1
90°
60°
2
92°
60°
3
91°
59°
4
85°
57°
5
83°
57°
6
83°
56°
7
84°
54°
8
82°
54°
9
81°
56°
10
81°
55°
11
80°
49°
12
79°
52°
13
80°
50°
14
79°
55°
15
80°
54°
16
80°
48°
17
78°
49°
18
77°
48°
19
78°
47°
20
77°
48°
21
79°
50°
22
81°
51°
23
83°
50°
24
Hist. Avg.
78°
49°
25
Hist. Avg.
78°
49°
26
Hist. Avg.
77°
48°
27
Hist. Avg.
76°
48°
28
Hist. Avg.
76°
47°
29
Hist. Avg.
76°
47°
30
Hist. Avg.
75°
46°
1
Hist. Avg.
74°
46°
2
Hist. Avg.
74°
46°
3
Hist. Avg.
73°
45°
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 77° to 92°, with overnight lows between 47° and 61°. The average high for September is 83° with an average low of 54°. 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.
