S
M
T
W
T
F
S
26
63°
43°
27
72°
37°
28
60°
52°
29
57°
51°
30
60°
41°
1
60°
35°
2
56°
39°
3
62°
38°
4
75°
52°
5
80°
57°
6
63°
45°
7
61°
38°
8
61°
42°
9
58°
43°
10
70°
51°
11
62°
41°
12
59°
42°
13
65°
47°
14
66°
48°
15
65°
46°
16
68°
47°
17
70°
49°
18
76°
54°
19
74°
51°
20
75°
54°
21
76°
53°
22
75°
47°
23
67°
45°
24
66°
46°
25
67°
48°
26
68°
47°
27
69°
47°
28
68°
48°
29
69°
47°
30
69°
49°
31
71°
57°
1
71°
53°
2
72°
50°
3
72°
54°
4
75°
56°
5
73°
52°
6
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Delaware Run
Delaware Run's May 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 38° and 59°. The average high for May is 69° with an average low of 49°. 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 Delaware Run. See also: June | July | August.