S
M
T
W
T
F
S
29
59°
23°
30
64°
33°
31
44°
32°
1
41°
27°
2
51°
30°
3
55°
33°
4
44°
34°
5
38°
28°
6
44°
23°
7
35°
21°
8
58°
20°
9
59°
36°
10
45°
27°
11
56°
40°
12
62°
52°
13
56°
48°
14
55°
40°
15
61°
45°
16
61°
40°
17
70°
47°
18
53°
36°
19
45°
31°
20
51°
40°
21
61°
44°
22
61°
45°
23
60°
41°
24
55°
34°
25
49°
33°
26
48°
34°
27
49°
32°
28
49°
34°
29
53°
33°
30
50°
31°
1
52°
31°
2
51°
34°
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 45° to 70°, with overnight lows between 31° and 52°. The average high for April is 55° with an average low of 38°. 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.
