S
M
T
W
T
F
S
26
85°
63°
27
84°
70°
28
80°
68°
29
71°
62°
30
69°
53°
1
68°
49°
2
70°
45°
3
73°
54°
4
81°
61°
5
81°
64°
6
71°
50°
7
70°
49°
8
74°
54°
9
78°
56°
10
79°
58°
11
80°
62°
12
81°
60°
13
81°
59°
14
83°
60°
15
81°
65°
16
84°
64°
17
84°
65°
18
83°
65°
19
85°
66°
20
85°
66°
21
84°
65°
22
82°
66°
23
79°
65°
24
83°
66°
25
84°
67°
26
82°
66°
27
81°
60°
28
80°
63°
29
84°
63°
30
82°
64°
31
86°
67°
1
85°
68°
2
88°
68°
3
88°
68°
4
86°
66°
5
82°
62°
6
82°
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 68° to 88°, with overnight lows between 45° and 68°. The average high for May is 81° 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 Delta. See also: June | July | August.