S
M
T
W
T
F
S
28
81°
62°
29
92°
76°
30
94°
79°
1
95°
80°
2
95°
71°
3
88°
70°
4
83°
67°
5
76°
66°
6
80°
67°
7
85°
64°
8
89°
68°
9
87°
72°
10
81°
67°
11
82°
66°
12
86°
65°
13
92°
72°
14
96°
74°
15
95°
72°
16
91°
72°
17
94°
68°
18
92°
67°
19
91°
66°
20
86°
63°
21
88°
64°
22
84°
62°
23
86°
61°
24
87°
62°
25
86°
61°
26
91°
67°
27
86°
65°
28
87°
61°
29
81°
59°
30
79°
58°
31
82°
63°
1
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in South Barrington
South Barrington's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 58° and 74°. The average high for July is 88° 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 South Barrington. See also: August | September | October.