S
M
T
W
T
F
S
30
80°
60°
31
81°
52°
1
78°
50°
2
75°
51°
3
74°
55°
4
76°
59°
5
81°
50°
6
80°
49°
7
73°
49°
8
74°
57°
9
75°
57°
10
76°
53°
11
73°
54°
12
71°
53°
13
72°
48°
14
70°
46°
15
70°
48°
16
70°
54°
17
71°
55°
18
77°
55°
19
78°
53°
20
77°
54°
21
76°
50°
22
72°
49°
23
69°
46°
24
68°
43°
25
68°
44°
26
68°
44°
27
66°
44°
28
Hist. Avg.
68°
45°
29
Hist. Avg.
68°
44°
30
Hist. Avg.
67°
44°
1
Hist. Avg.
67°
44°
2
Hist. Avg.
66°
43°
3
Hist. Avg.
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Walworth
Walworth's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 43° and 60°. The average high for September is 74° with an average low of 51°. 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 Walworth. See also: October | November | December.