S
M
T
W
T
F
S
30
87°
55°
31
84°
50°
1
74°
61°
2
93°
54°
3
88°
70°
4
97°
64°
5
93°
68°
6
95°
63°
7
91°
59°
8
82°
52°
9
81°
48°
10
88°
52°
11
79°
52°
12
68°
48°
13
77°
43°
14
72°
52°
15
66°
45°
16
75°
49°
17
68°
54°
18
70°
50°
19
61°
49°
20
58°
44°
21
65°
46°
22
70°
46°
23
70°
49°
24
77°
51°
25
77°
49°
26
76°
50°
27
72°
48°
28
67°
43°
29
66°
36°
30
64°
44°
1
71°
39°
2
58°
45°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deadwood
Deadwood's September 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 36° and 54°. The average high for September is 68° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Deadwood. See also: October | November | December.
