S
M
T
W
T
F
S
28
77°
57°
29
77°
58°
30
75°
58°
1
76°
52°
2
78°
57°
3
80°
60°
4
80°
61°
5
81°
59°
6
82°
59°
7
81°
56°
8
80°
61°
9
82°
60°
10
83°
55°
11
74°
52°
12
75°
49°
13
73°
51°
14
77°
54°
15
78°
57°
16
78°
52°
17
75°
52°
18
72°
50°
19
74°
53°
20
77°
59°
21
79°
56°
22
78°
60°
23
82°
61°
24
74°
59°
25
82°
61°
26
Hist. Avg.
75°
55°
27
Hist. Avg.
75°
55°
28
Hist. Avg.
75°
55°
29
Hist. Avg.
75°
55°
30
Hist. Avg.
75°
55°
31
Hist. Avg.
75°
55°
1
Hist. Avg.
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Sioux
Sioux's July 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 49° and 61°. The average high for July is 78° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Sioux. See also: August | September | October.