S
M
T
W
T
F
S
26
86°
68°
27
86°
69°
28
85°
68°
29
85°
67°
30
83°
64°
31
78°
62°
1
79°
66°
2
77°
66°
3
78°
64°
4
83°
67°
5
84°
68°
6
84°
66°
7
79°
63°
8
77°
64°
9
78°
64°
10
81°
64°
11
82°
66°
12
83°
66°
13
84°
67°
14
85°
65°
15
84°
67°
16
87°
62°
17
84°
58°
18
77°
56°
19
75°
56°
20
75°
57°
21
77°
56°
22
77°
56°
23
78°
57°
24
77°
58°
25
79°
60°
26
82°
60°
27
81°
56°
28
75°
55°
29
76°
57°
30
78°
62°
31
80°
55°
1
80°
53°
2
75°
54°
3
74°
58°
4
77°
63°
5
82°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in New Chicago
New Chicago's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 53° and 69°. The average high for August is 80° with an average low of 62°. 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 New Chicago. See also: September | October | November.