S
M
T
W
T
F
S
30
88°
58°
31
81°
60°
1
82°
61°
2
83°
65°
3
87°
64°
4
85°
60°
5
82°
63°
6
86°
64°
7
86°
62°
8
85°
61°
9
83°
62°
10
84°
60°
11
83°
61°
12
78°
61°
13
85°
62°
14
84°
62°
15
Hist. Avg.
83°
59°
16
Hist. Avg.
82°
59°
17
Hist. Avg.
82°
58°
18
Hist. Avg.
82°
58°
19
Hist. Avg.
81°
57°
20
Hist. Avg.
81°
57°
21
Hist. Avg.
80°
56°
22
Hist. Avg.
80°
56°
23
Hist. Avg.
80°
56°
24
Hist. Avg.
79°
55°
25
Hist. Avg.
79°
55°
26
Hist. Avg.
78°
54°
27
Hist. Avg.
78°
54°
28
Hist. Avg.
78°
53°
29
Hist. Avg.
77°
53°
30
Hist. Avg.
77°
52°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
76°
52°
3
Hist. Avg.
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Gallipolis
Gallipolis's September 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 58° and 65°. 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 Gallipolis. See also: October | November | December.