S
M
T
W
T
F
S
26
82°
68°
27
82°
72°
28
86°
70°
29
79°
63°
30
63°
55°
1
55°
50°
2
70°
46°
3
75°
45°
4
77°
50°
5
81°
64°
6
77°
52°
7
68°
50°
8
72°
55°
9
81°
64°
10
82°
64°
11
72°
61°
12
79°
52°
13
82°
52°
14
84°
59°
15
84°
63°
16
82°
68°
17
82°
70°
18
82°
73°
19
82°
63°
20
72°
59°
21
73°
61°
22
82°
64°
23
77°
64°
24
82°
63°
25
84°
63°
26
82°
63°
27
77°
67°
28
86°
69°
29
90°
70°
30
89°
72°
31
87°
69°
1
89°
65°
2
83°
64°
3
82°
64°
4
84°
67°
5
82°
64°
6
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Deadwood
Deadwood's May 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 64° and 72°. The average high for May is 85° with an average low of 67°. 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 Deadwood. See also: June | July | August.
