S
M
T
W
T
F
S
30
77°
68°
31
84°
72°
1
88°
73°
2
93°
73°
3
91°
70°
4
79°
70°
5
77°
66°
6
77°
63°
7
77°
63°
8
84°
61°
9
86°
70°
10
79°
68°
11
77°
63°
12
79°
64°
13
81°
63°
14
70°
55°
15
84°
70°
16
75°
68°
17
74°
66°
18
73°
65°
19
77°
68°
20
72°
65°
21
70°
58°
22
68°
59°
23
68°
62°
24
67°
59°
25
67°
61°
26
66°
59°
27
68°
60°
28
69°
58°
29
74°
60°
30
69°
59°
1
72°
59°
2
74°
58°
3
70°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Catawba Island Township
Catawba Island Township's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 58° and 70°. The average high for September is 71° with an average low of 62°. 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 Catawba Island Township. See also: October | November | December.