S
M
T
W
T
F
S
28
90°
49°
29
86°
61°
30
90°
55°
1
88°
60°
2
94°
60°
3
83°
60°
4
88°
59°
5
100°
67°
6
93°
73°
7
90°
64°
8
84°
62°
9
85°
63°
10
94°
69°
11
102°
73°
12
103°
75°
13
101°
72°
14
100°
69°
15
90°
62°
16
92°
68°
17
94°
68°
18
95°
69°
19
91°
65°
20
85°
62°
21
89°
68°
22
89°
68°
23
88°
69°
24
89°
68°
25
89°
68°
26
88°
67°
27
91°
68°
28
90°
69°
29
89°
68°
30
90°
68°
31
91°
69°
1
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Rapid City
Rapid City's July 2026 forecast shows daily high temperatures ranging from 84° to 103°, with overnight lows between 62° and 75°. The average high for July is 92° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Rapid City. See also: August | September | October.