S
M
T
W
T
F
S
27
65°
51°
28
73°
58°
29
79°
51°
30
82°
49°
1
63°
47°
2
77°
47°
3
74°
47°
4
81°
43°
5
89°
58°
6
85°
52°
7
79°
49°
8
75°
52°
9
84°
61°
10
83°
45°
11
49°
38°
12
54°
34°
13
46°
39°
14
59°
43°
15
57°
42°
16
59°
39°
17
60°
38°
18
56°
37°
19
61°
44°
20
60°
43°
21
64°
44°
22
64°
43°
23
57°
37°
24
50°
41°
25
63°
43°
26
61°
42°
27
62°
42°
28
62°
41°
29
49°
38°
30
49°
33°
31
45°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Rapid City
Rapid City's October 2026 forecast shows daily high temperatures ranging from 45° to 89°, with overnight lows between 29° and 61°. The average high for October is 62° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Rapid City. See also: November | December | January.
