S
M
T
W
T
F
S
26
77°
54°
27
77°
52°
28
75°
51°
29
77°
52°
30
78°
53°
31
78°
59°
1
79°
59°
2
85°
54°
3
82°
53°
4
80°
59°
5
85°
60°
6
86°
61°
7
86°
61°
8
86°
58°
9
79°
54°
10
77°
52°
11
76°
50°
12
76°
52°
13
80°
59°
14
81°
58°
15
78°
51°
16
81°
50°
17
Hist. Avg.
80°
55°
18
Hist. Avg.
80°
55°
19
Hist. Avg.
80°
55°
20
Hist. Avg.
80°
55°
21
Hist. Avg.
79°
54°
22
Hist. Avg.
79°
54°
23
Hist. Avg.
79°
54°
24
Hist. Avg.
78°
54°
25
Hist. Avg.
78°
54°
26
Hist. Avg.
78°
53°
27
Hist. Avg.
78°
53°
28
Hist. Avg.
77°
53°
29
Hist. Avg.
77°
52°
30
Hist. Avg.
76°
52°
31
Hist. Avg.
76°
52°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
76°
51°
3
Hist. Avg.
75°
51°
4
Hist. Avg.
75°
51°
5
Hist. Avg.
74°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Gary
Gary's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 50° and 61°. The average high for August is 80° with an average low of 55°. 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.