S
M
T
W
T
F
S
26
68°
53°
27
73°
54°
28
67°
55°
29
71°
49°
30
73°
50°
31
79°
55°
1
69°
56°
2
65°
51°
3
74°
44°
4
77°
54°
5
77°
51°
6
66°
50°
7
69°
46°
8
72°
51°
9
72°
51°
10
66°
49°
11
67°
54°
12
64°
48°
13
64°
49°
14
68°
46°
15
74°
44°
16
69°
52°
17
78°
50°
18
74°
55°
19
77°
54°
20
71°
51°
21
80°
47°
22
86°
52°
23
73°
58°
24
79°
50°
25
80°
52°
26
82°
58°
27
77°
54°
28
60°
45°
29
71°
48°
30
72°
50°
31
71°
45°
1
70°
44°
2
72°
49°
3
67°
44°
4
65°
45°
5
66°
43°
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 60° to 82°, with overnight lows between 43° and 58°. The average high for August is 72° with an average low of 48°. 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.