S
M
T
W
T
F
S
26
79°
60°
27
81°
60°
28
82°
62°
29
81°
60°
30
80°
60°
31
73°
56°
1
73°
54°
2
81°
61°
3
82°
61°
4
80°
60°
5
74°
58°
6
75°
57°
7
80°
61°
8
81°
60°
9
81°
62°
10
80°
61°
11
76°
60°
12
73°
57°
13
80°
60°
14
76°
60°
15
73°
59°
16
75°
58°
17
74°
58°
18
72°
56°
19
77°
60°
20
79°
61°
21
76°
62°
22
80°
59°
23
81°
60°
24
79°
59°
25
80°
60°
26
71°
52°
27
71°
52°
28
78°
57°
29
79°
59°
30
71°
51°
31
70°
57°
1
71°
54°
2
69°
53°
3
70°
52°
4
75°
57°
5
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Highland Park
Highland Park's August 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 50° and 62°. The average high for August is 76° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Highland Park. See also: September | October | November.