S
M
T
W
T
F
S
29
75°
39°
30
76°
37°
31
41°
33°
1
41°
30°
2
45°
31°
3
33°
24°
4
54°
30°
5
63°
27°
6
43°
22°
7
72°
22°
8
60°
26°
9
50°
30°
10
62°
45°
11
83°
54°
12
77°
46°
13
71°
43°
14
56°
42°
15
66°
42°
16
47°
27°
17
52°
34°
18
61°
41°
19
63°
41°
20
62°
40°
21
65°
40°
22
55°
36°
23
53°
39°
24
50°
37°
25
50°
40°
26
51°
43°
27
55°
43°
28
54°
42°
29
52°
40°
30
50°
41°
1
53°
35°
2
54°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Rapid City
Rapid City's April 2026 forecast shows daily high temperatures ranging from 47° to 83°, with overnight lows between 27° and 54°. The average high for April is 58° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Rapid City. See also: May | June | July.
