S
M
T
W
T
F
S
26
86°
69°
27
86°
69°
28
87°
68°
29
86°
68°
30
84°
65°
31
79°
62°
1
80°
66°
2
77°
66°
3
78°
64°
4
83°
68°
5
84°
69°
6
84°
67°
7
78°
64°
8
77°
65°
9
78°
65°
10
80°
65°
11
81°
66°
12
83°
67°
13
84°
68°
14
85°
67°
15
84°
68°
16
86°
62°
17
84°
59°
18
77°
57°
19
75°
57°
20
75°
56°
21
77°
57°
22
77°
57°
23
78°
58°
24
77°
59°
25
79°
62°
26
81°
58°
27
80°
57°
28
75°
56°
29
76°
60°
30
80°
63°
31
80°
55°
1
79°
55°
2
75°
54°
3
74°
59°
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 Lenox
New Lenox's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 54° 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 Lenox. See also: September | October | November.
