S
M
T
W
T
F
S
28
80°
61°
29
93°
73°
30
94°
79°
1
95°
80°
2
94°
72°
3
87°
70°
4
83°
66°
5
N/A
6
81°
57°
7
86°
63°
8
86°
70°
9
83°
64°
10
75°
61°
11
78°
61°
12
82°
65°
13
83°
66°
14
86°
65°
15
85°
67°
16
87°
67°
17
86°
68°
18
87°
67°
19
82°
63°
20
78°
60°
21
77°
60°
22
78°
61°
23
80°
65°
24
79°
65°
25
79°
64°
26
81°
66°
27
78°
66°
28
86°
67°
29
85°
67°
30
86°
66°
31
84°
67°
1
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Lake Barrington
Lake Barrington's July 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 57° and 70°. The average high for July is 82° 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 Lake Barrington. See also: August | September | October.