S
M
T
W
T
F
S
28
86°
66°
29
94°
74°
30
87°
68°
1
85°
65°
2
85°
65°
3
85°
66°
4
88°
67°
5
87°
64°
6
87°
70°
7
89°
71°
8
84°
69°
9
84°
65°
10
87°
66°
11
88°
68°
12
90°
71°
13
90°
69°
14
94°
67°
15
92°
68°
16
95°
72°
17
97°
72°
18
97°
72°
19
98°
70°
20
93°
68°
21
90°
64°
22
83°
62°
23
85°
63°
24
89°
63°
25
88°
67°
26
89°
66°
27
84°
71°
28
80°
62°
29
80°
68°
30
81°
65°
31
80°
69°
1
79°
69°
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 79° to 98°, with overnight lows between 62° and 72°. The average high for July is 88° with an average low of 67°. 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.
