S
M
T
W
T
F
S
26
49°
41°
27
66°
36°
28
64°
36°
29
68°
51°
30
70°
50°
1
68°
45°
2
61°
45°
3
60°
43°
4
76°
44°
5
84°
60°
6
74°
62°
7
66°
47°
8
69°
47°
9
74°
53°
10
84°
51°
11
63°
43°
12
69°
45°
13
76°
51°
14
65°
54°
15
70°
49°
16
83°
48°
17
87°
65°
18
96°
61°
19
95°
69°
20
96°
72°
21
74°
57°
22
61°
55°
23
57°
54°
24
66°
57°
25
75°
59°
26
79°
67°
27
80°
66°
28
80°
61°
29
78°
54°
30
70°
45°
31
73°
55°
1
74°
55°
2
70°
51°
3
71°
52°
4
76°
60°
5
82°
64°
6
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Millsboro
Millsboro's May 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 45° and 66°. The average high for May is 75° with an average low of 56°. 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 Millsboro. See also: June | July | August.