S
M
T
W
T
F
S
26
85°
67°
27
83°
66°
28
83°
66°
29
82°
65°
30
84°
66°
31
79°
63°
1
80°
59°
2
79°
62°
3
79°
64°
4
80°
64°
5
84°
66°
6
87°
67°
7
88°
68°
8
88°
67°
9
87°
66°
10
87°
66°
11
86°
65°
12
87°
66°
13
87°
67°
14
87°
64°
15
79°
61°
16
81°
58°
17
80°
56°
18
79°
54°
19
82°
53°
20
78°
53°
21
77°
56°
22
78°
53°
23
82°
55°
24
81°
59°
25
85°
59°
26
87°
63°
27
85°
62°
28
88°
55°
29
85°
53°
30
76°
53°
31
74°
54°
1
75°
51°
2
76°
55°
3
80°
58°
4
84°
59°
5
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sioux Center
Sioux Center's August 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 51° and 68°. The average high for August is 82° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Sioux Center. See also: September | October | November.