S
M
T
W
T
F
S
26
79°
55°
27
84°
63°
28
64°
54°
29
66°
48°
30
63°
39°
1
64°
41°
2
64°
43°
3
79°
41°
4
79°
59°
5
63°
45°
6
59°
43°
7
66°
37°
8
77°
50°
9
81°
55°
10
72°
48°
11
75°
43°
12
77°
48°
13
77°
50°
14
75°
46°
15
81°
55°
16
84°
64°
17
82°
63°
18
84°
73°
19
73°
61°
20
64°
57°
21
75°
57°
22
68°
57°
23
75°
57°
24
81°
59°
25
81°
57°
26
N/A
27
82°
65°
28
73°
66°
29
74°
63°
30
80°
62°
31
75°
55°
1
75°
56°
2
80°
59°
3
75°
58°
4
78°
59°
5
79°
59°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Diamond City
Diamond City's May 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 55° and 66°. The average high for May is 78° with an average low of 60°. 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 Diamond City. See also: June | July | August.
