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
77°
51°
5
91°
56°
6
85°
51°
7
76°
49°
8
73°
50°
9
72°
56°
10
76°
50°
11
61°
40°
12
52°
39°
13
57°
41°
14
58°
43°
15
57°
42°
16
59°
43°
17
58°
37°
18
56°
44°
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 91°, with overnight lows between 29° and 56°. The average high for October is 63° with an average low of 43°. 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.
