S
M
T
W
T
F
S
26
85°
68°
27
78°
61°
28
79°
64°
29
81°
66°
30
80°
62°
31
81°
65°
1
81°
61°
2
80°
59°
3
79°
60°
4
77°
57°
5
78°
58°
6
78°
59°
7
79°
59°
8
80°
60°
9
83°
63°
10
78°
64°
11
80°
66°
12
83°
66°
13
83°
67°
14
84°
62°
15
83°
58°
16
81°
59°
17
77°
64°
18
76°
59°
19
77°
57°
20
75°
57°
21
76°
60°
22
78°
61°
23
82°
63°
24
83°
64°
25
82°
56°
26
83°
56°
27
75°
57°
28
75°
56°
29
76°
63°
30
80°
63°
31
82°
62°
1
82°
56°
2
78°
56°
3
81°
61°
4
75°
61°
5
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in North Chicago
North Chicago's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 56° and 68°. The average high for August is 80° with an average low of 61°. 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 North Chicago. See also: September | October | November.
