S
M
T
W
T
F
S
26
79°
62°
27
79°
59°
28
71°
64°
29
71°
63°
30
73°
61°
31
80°
59°
1
79°
59°
2
74°
66°
3
70°
61°
4
80°
56°
5
82°
61°
6
86°
69°
7
84°
67°
8
82°
68°
9
79°
64°
10
79°
61°
11
78°
64°
12
79°
60°
13
77°
62°
14
79°
59°
15
76°
55°
16
74°
56°
17
79°
64°
18
77°
61°
19
76°
56°
20
67°
55°
21
73°
49°
22
76°
56°
23
74°
57°
24
66°
55°
25
69°
53°
26
76°
60°
27
76°
60°
28
73°
53°
29
72°
49°
30
76°
58°
31
71°
54°
1
70°
52°
2
70°
54°
3
69°
53°
4
71°
52°
5
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mcdonough
Mcdonough's August 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 49° and 60°. The average high for August is 71° with an average low of 54°. 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 Mcdonough. See also: September | October | November.