S
M
T
W
T
F
S
26
79°
55°
27
81°
53°
28
84°
57°
29
87°
61°
30
88°
61°
31
89°
60°
1
88°
54°
2
80°
56°
3
82°
57°
4
82°
54°
5
80°
51°
6
77°
50°
7
76°
51°
8
78°
51°
9
79°
56°
10
84°
59°
11
86°
59°
12
87°
57°
13
85°
58°
14
86°
50°
15
77°
48°
16
75°
49°
17
77°
51°
18
78°
55°
19
80°
51°
20
77°
49°
21
77°
53°
22
79°
52°
23
83°
52°
24
75°
53°
25
76°
53°
26
76°
55°
27
77°
51°
28
78°
48°
29
80°
46°
30
74°
47°
31
72°
46°
1
73°
49°
2
75°
46°
3
81°
52°
4
74°
52°
5
82°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Deadwood
Deadwood's August 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 46° and 61°. The average high for August is 80° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Deadwood. See also: September | October | November.