S
M
T
W
T
F
S
26
51°
40°
27
68°
37°
28
65°
34°
29
69°
49°
30
72°
48°
1
68°
42°
2
60°
45°
3
60°
41°
4
75°
43°
5
83°
57°
6
76°
54°
7
60°
43°
8
67°
52°
9
70°
51°
10
80°
59°
11
68°
47°
12
67°
50°
13
70°
56°
14
77°
58°
15
80°
60°
16
74°
57°
17
71°
58°
18
73°
57°
19
78°
56°
20
72°
54°
21
70°
55°
22
70°
55°
23
71°
56°
24
71°
54°
25
73°
57°
26
75°
60°
27
74°
58°
28
76°
60°
29
76°
58°
30
77°
62°
31
80°
63°
1
75°
64°
2
79°
63°
3
78°
63°
4
81°
64°
5
81°
64°
6
80°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Delmar
Delmar's May 2026 forecast shows daily high temperatures ranging from 60° to 81°, with overnight lows between 43° and 65°. The average high for May is 74° with an average low of 57°. 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 Delmar. See also: June | July | August.