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
91°
67°
12
93°
68°
13
94°
70°
14
97°
67°
15
96°
72°
16
100°
72°
17
100°
72°
18
97°
70°
19
96°
67°
20
95°
65°
21
89°
68°
22
87°
68°
23
87°
66°
24
88°
67°
25
91°
71°
26
90°
71°
27
87°
68°
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 100°, with overnight lows between 62° and 72°. The average high for July is 90° with an average low of 68°. 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.
