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
91°
69°
15
89°
66°
16
91°
64°
17
95°
71°
18
87°
65°
19
84°
60°
20
95°
70°
21
80°
63°
22
77°
56°
23
79°
64°
24
77°
67°
25
102°
73°
26
103°
75°
27
104°
71°
28
99°
70°
29
95°
69°
30
93°
67°
31
94°
66°
1
90°
64°
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 77° to 104°, with overnight lows between 64° and 75°. The average high for July is 94° with an average low of 69°. 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.
