S
M
T
W
T
F
S
28
95°
72°
29
94°
77°
30
92°
74°
1
92°
73°
2
94°
74°
3
92°
75°
4
90°
74°
5
89°
73°
6
91°
76°
7
92°
75°
8
91°
75°
9
90°
77°
10
91°
75°
11
92°
77°
12
91°
74°
13
91°
77°
14
91°
77°
15
90°
76°
16
89°
76°
17
88°
75°
18
88°
76°
19
89°
76°
20
90°
76°
21
89°
76°
22
88°
76°
23
87°
75°
24
87°
75°
25
88°
74°
26
87°
75°
27
88°
75°
28
87°
76°
29
88°
76°
30
89°
77°
31
88°
77°
1
87°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lake Forest
Lake Forest's July 2026 forecast shows daily high temperatures ranging from 87° to 94°, with overnight lows between 73° and 77°. The average high for July is 90° with an average low of 75°. 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 Forest. See also: August | September | October.
