S
M
T
W
T
F
S
30
90°
66°
31
89°
65°
1
96°
71°
2
95°
70°
3
90°
70°
4
93°
68°
5
82°
65°
6
83°
59°
7
84°
56°
8
87°
54°
9
90°
61°
10
91°
69°
11
82°
69°
12
83°
68°
13
89°
71°
14
81°
62°
15
80°
48°
16
86°
55°
17
91°
63°
18
88°
67°
19
82°
64°
20
87°
70°
21
74°
66°
22
66°
58°
23
62°
54°
24
66°
44°
25
75°
54°
26
75°
60°
27
70°
60°
28
73°
61°
29
79°
53°
30
80°
55°
1
82°
58°
2
81°
58°
3
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sumerduck
Sumerduck's September 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 53° and 61°. The average high for September is 77° with an average low of 57°. 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 Sumerduck. See also: October | November | December.