S
M
T
W
T
F
S
28
80°
67°
29
81°
67°
30
78°
66°
1
83°
67°
2
86°
67°
3
84°
63°
4
78°
60°
5
79°
66°
6
85°
68°
7
86°
68°
8
81°
65°
9
81°
64°
10
82°
66°
11
85°
67°
12
87°
69°
13
81°
60°
14
81°
60°
15
83°
64°
16
82°
66°
17
86°
60°
18
85°
61°
19
82°
60°
20
84°
60°
21
89°
59°
22
82°
62°
23
82°
66°
24
85°
70°
25
89°
64°
26
89°
68°
27
83°
67°
28
81°
69°
29
87°
62°
30
88°
63°
31
87°
63°
1
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sioux Falls
Sioux Falls's July 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 59° and 70°. The average high for July is 84° with an average low of 65°. 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 Falls. See also: August | September | October.
