S
M
T
W
T
F
S
26
63°
46°
27
82°
41°
28
77°
55°
29
68°
53°
30
57°
41°
1
61°
36°
2
55°
35°
3
64°
31°
4
75°
48°
5
76°
60°
6
64°
52°
7
63°
39°
8
71°
37°
9
72°
54°
10
71°
53°
11
71°
47°
12
76°
44°
13
75°
48°
14
62°
43°
15
70°
39°
16
73°
47°
17
87°
62°
18
89°
69°
19
90°
68°
20
75°
53°
21
67°
59°
22
72°
64°
23
76°
66°
24
78°
64°
25
80°
66°
26
78°
67°
27
80°
64°
28
79°
63°
29
81°
59°
30
82°
59°
31
83°
57°
1
80°
61°
2
79°
62°
3
79°
61°
4
75°
58°
5
75°
56°
6
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gallipolis
Gallipolis's May 2026 forecast shows daily high temperatures ranging from 67° to 90°, with overnight lows between 53° and 69°. The average high for May is 79° 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 May weather will actually feel in Gallipolis. See also: June | July | August.