S
M
T
W
T
F
S
26
66°
47°
27
65°
50°
28
60°
51°
29
61°
39°
30
59°
34°
1
54°
39°
2
54°
37°
3
61°
46°
4
74°
56°
5
61°
43°
6
54°
39°
7
56°
40°
8
63°
45°
9
69°
48°
10
67°
47°
11
68°
49°
12
68°
50°
13
70°
55°
14
73°
53°
15
71°
50°
16
77°
58°
17
76°
56°
18
70°
54°
19
76°
57°
20
74°
57°
21
74°
48°
22
69°
48°
23
68°
49°
24
70°
49°
25
69°
51°
26
69°
50°
27
70°
50°
28
71°
51°
29
72°
54°
30
73°
60°
31
77°
56°
1
73°
53°
2
76°
57°
3
78°
61°
4
79°
61°
5
80°
62°
6
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Delphi
Delphi's May 2026 forecast shows daily high temperatures ranging from 54° to 82°, with overnight lows between 37° and 63°. The average high for May is 70° with an average low of 52°. 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 Delphi. See also: June | July | August.