S
M
T
W
T
F
S
26
68°
46°
27
72°
51°
28
69°
48°
29
62°
48°
30
60°
45°
1
60°
46°
2
62°
48°
3
67°
53°
4
71°
54°
5
72°
53°
6
66°
48°
7
68°
47°
8
72°
54°
9
75°
56°
10
75°
56°
11
73°
57°
12
76°
57°
13
75°
55°
14
68°
50°
15
68°
49°
16
70°
54°
17
78°
59°
18
79°
58°
19
78°
49°
20
67°
48°
21
68°
49°
22
69°
52°
23
70°
50°
24
77°
59°
25
80°
60°
26
81°
60°
27
75°
60°
28
71°
59°
29
75°
61°
30
78°
62°
31
79°
62°
1
80°
60°
2
78°
58°
3
76°
57°
4
75°
55°
5
78°
58°
6
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gahanna
Gahanna's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 45° and 62°. The average high for May is 72° with an average low of 54°. 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 Gahanna. See also: June | July | August.