S
M
T
W
T
F
S
26
58°
43°
27
71°
39°
28
58°
42°
29
59°
49°
30
65°
48°
1
67°
38°
2
60°
45°
3
62°
42°
4
75°
39°
5
84°
58°
6
69°
56°
7
65°
50°
8
66°
50°
9
66°
51°
10
76°
50°
11
59°
43°
12
61°
45°
13
59°
52°
14
62°
50°
15
69°
50°
16
74°
53°
17
75°
55°
18
76°
58°
19
80°
60°
20
82°
61°
21
81°
53°
22
67°
50°
23
68°
51°
24
69°
50°
25
71°
54°
26
75°
57°
27
72°
54°
28
74°
54°
29
72°
52°
30
76°
58°
31
80°
60°
1
77°
61°
2
80°
58°
3
79°
61°
4
81°
62°
5
81°
61°
6
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Delta
Delta's May 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 43° and 62°. The average high for May is 73° with an average low of 55°. 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 Delta. See also: June | July | August.