S
M
T
W
T
F
S
30
100°
74°
31
99°
77°
1
100°
83°
2
100°
79°
3
100°
78°
4
100°
76°
5
103°
77°
6
104°
73°
7
101°
76°
8
102°
78°
9
100°
72°
10
81°
67°
11
89°
71°
12
93°
71°
13
97°
71°
14
98°
68°
15
82°
60°
16
83°
61°
17
81°
59°
18
78°
55°
19
74°
55°
20
78°
54°
21
81°
57°
22
85°
63°
23
86°
64°
24
86°
64°
25
85°
63°
26
83°
62°
27
83°
62°
28
84°
61°
29
84°
62°
30
79°
56°
1
75°
51°
2
70°
47°
3
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carthage
Carthage's September 2026 forecast shows daily high temperatures ranging from 70° to 102°, with overnight lows between 47° and 78°. The average high for September is 84° 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 Carthage. See also: October | November | December.