S
M
T
W
T
F
S
26
79°
61°
27
78°
63°
28
78°
62°
29
80°
63°
30
81°
62°
31
82°
62°
1
81°
64°
2
81°
69°
3
82°
65°
4
81°
61°
5
78°
62°
6
78°
63°
7
77°
62°
8
79°
62°
9
83°
68°
10
84°
68°
11
83°
64°
12
81°
60°
13
77°
59°
14
75°
59°
15
77°
61°
16
76°
64°
17
77°
68°
18
83°
65°
19
83°
62°
20
77°
59°
21
76°
60°
22
75°
65°
23
75°
63°
24
81°
58°
25
79°
59°
26
75°
58°
27
75°
57°
28
74°
57°
29
74°
56°
30
75°
60°
31
75°
58°
1
74°
57°
2
74°
58°
3
76°
56°
4
75°
62°
5
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gary
Gary's August 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 56° and 69°. The average high for August is 78° 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 Gary. See also: September | October | November.
