S
M
T
W
T
F
S
27
63°
39°
28
63°
41°
29
68°
42°
30
59°
36°
1
54°
33°
2
57°
39°
3
55°
34°
4
52°
31°
5
55°
39°
6
63°
41°
7
60°
40°
8
60°
37°
9
57°
38°
10
57°
38°
11
56°
36°
12
50°
27°
13
51°
35°
14
56°
35°
15
56°
34°
16
50°
34°
17
54°
33°
18
54°
32°
19
52°
33°
20
53°
31°
21
48°
30°
22
51°
32°
23
53°
32°
24
50°
30°
25
51°
28°
26
41°
27°
27
47°
30°
28
49°
29°
29
47°
28°
30
46°
28°
31
46°
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 41° to 68°, with overnight lows between 26° and 42°. The average high for October is 53° with an average low of 33°. 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.
