S
M
T
W
T
F
S
28
89°
55°
29
84°
57°
30
86°
57°
1
87°
62°
2
87°
64°
3
90°
64°
4
87°
61°
5
83°
63°
6
91°
66°
7
90°
65°
8
90°
67°
9
91°
65°
10
84°
61°
11
88°
67°
12
88°
67°
13
80°
66°
14
83°
67°
15
86°
67°
16
80°
66°
17
80°
66°
18
84°
65°
19
88°
67°
20
89°
68°
21
89°
68°
22
91°
69°
23
91°
70°
24
90°
69°
25
89°
67°
26
90°
68°
27
86°
68°
28
89°
68°
29
89°
68°
30
90°
69°
31
90°
69°
1
89°
68°
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 80° to 91°, with overnight lows between 55° and 70°. The average high for July is 87° with an average low of 66°. 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.