S
M
T
W
T
F
S
26
56°
41°
27
53°
39°
28
59°
35°
29
64°
41°
30
64°
41°
1
67°
40°
2
71°
41°
3
77°
46°
4
74°
54°
5
71°
48°
6
68°
39°
7
80°
49°
8
87°
49°
9
80°
43°
10
83°
47°
11
89°
55°
12
97°
57°
13
84°
50°
14
89°
53°
15
87°
55°
16
84°
51°
17
83°
50°
18
76°
42°
19
70°
40°
20
78°
45°
21
81°
47°
22
82°
49°
23
82°
48°
24
73°
48°
25
80°
47°
26
83°
49°
27
84°
50°
28
73°
49°
29
73°
47°
30
74°
45°
31
76°
46°
1
77°
49°
2
79°
48°
3
81°
49°
4
81°
51°
5
85°
51°
6
87°
52°
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 68° to 97°, with overnight lows between 39° and 57°. The average high for May is 81° with an average low of 48°. 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.