S
M
T
W
T
F
S
27
63°
39°
28
63°
41°
29
N/A
30
59°
37°
1
54°
32°
2
57°
41°
3
60°
34°
4
52°
31°
5
55°
39°
6
63°
41°
7
60°
40°
8
60°
37°
9
59°
38°
10
57°
38°
11
52°
34°
12
53°
31°
13
51°
27°
14
56°
35°
15
56°
34°
16
53°
33°
17
50°
32°
18
49°
32°
19
46°
30°
20
48°
29°
21
52°
31°
22
52°
31°
23
48°
30°
24
40°
26°
25
35°
22°
26
42°
30°
27
49°
29°
28
46°
27°
29
47°
28°
30
46°
27°
31
44°
26°
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 35° to 63°, with overnight lows between 22° and 41°. The average high for October is 52° with an average low of 32°. 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.
