S
M
T
W
T
F
S
26
90°
67°
27
85°
68°
28
86°
66°
29
91°
63°
30
93°
71°
1
93°
72°
2
88°
65°
3
79°
64°
4
81°
61°
5
85°
65°
6
90°
69°
7
96°
70°
8
89°
70°
9
87°
69°
10
87°
69°
11
89°
68°
12
87°
71°
13
88°
68°
14
87°
68°
15
86°
69°
16
88°
70°
17
87°
67°
18
85°
69°
19
88°
70°
20
89°
70°
21
86°
69°
22
84°
67°
23
84°
65°
24
85°
68°
25
85°
70°
26
86°
71°
27
85°
71°
28
85°
70°
29
86°
71°
30
86°
70°
31
85°
71°
1
85°
72°
2
86°
71°
3
86°
72°
4
87°
72°
5
86°
71°
6
86°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Deltona
Deltona's May 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 61° and 73°. The average high for May is 87° with an average low of 69°. 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 Deltona. See also: June | July | August.
