S
M
T
W
T
F
S
29
37°
23°
30
42°
29°
31
36°
29°
1
29°
23°
2
30°
28°
3
34°
27°
4
32°
23°
5
44°
23°
6
32°
18°
7
41°
14°
8
36°
31°
9
39°
30°
10
46°
31°
11
45°
29°
12
46°
35°
13
50°
38°
14
40°
35°
15
46°
32°
16
53°
30°
17
55°
31°
18
35°
25°
19
40°
22°
20
52°
20°
21
59°
39°
22
54°
41°
23
53°
43°
24
57°
33°
25
54°
38°
26
50°
38°
27
55°
38°
28
55°
32°
29
46°
33°
30
44°
32°
1
44°
32°
2
50°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sioux
Sioux's April 2026 forecast shows daily high temperatures ranging from 44° to 57°, with overnight lows between 32° and 38°. The average high for April is 51° with an average low of 34°. 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. See also: May | June | July.
