S
M
T
W
T
F
S
29
73°
38°
30
79°
36°
31
52°
32°
1
47°
28°
2
37°
33°
3
36°
31°
4
45°
30°
5
64°
28°
6
42°
24°
7
46°
16°
8
58°
26°
9
50°
28°
10
59°
41°
11
63°
59°
12
84°
54°
13
73°
31°
14
49°
29°
15
62°
40°
16
71°
47°
17
70°
47°
18
67°
45°
19
73°
49°
20
70°
48°
21
75°
52°
22
53°
43°
23
54°
44°
24
54°
44°
25
55°
38°
26
56°
43°
27
55°
45°
28
56°
47°
29
64°
46°
30
67°
45°
1
56°
42°
2
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sioux Falls
Sioux Falls's April 2026 forecast shows daily high temperatures ranging from 49° to 84°, with overnight lows between 26° and 59°. The average high for April is 62° 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 April weather will actually feel in Sioux Falls. See also: May | June | July.
