S
M
T
W
T
F
S
30
89°
72°
31
94°
70°
1
97°
72°
2
98°
72°
3
98°
72°
4
97°
71°
5
100°
72°
6
96°
69°
7
89°
70°
8
90°
68°
9
92°
67°
10
94°
69°
11
97°
74°
12
92°
73°
13
94°
72°
14
96°
70°
15
91°
71°
16
90°
67°
17
92°
61°
18
95°
66°
19
91°
70°
20
92°
69°
21
96°
68°
22
90°
69°
23
78°
63°
24
71°
55°
25
78°
50°
26
81°
50°
27
82°
51°
28
85°
57°
29
88°
60°
30
89°
62°
1
88°
64°
2
79°
61°
3
81°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Congaree
Congaree's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 50° and 69°. The average high for September is 83° with an average low of 59°. 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 Congaree. See also: October | November | December.
