S
M
T
W
T
F
S
26
78°
59°
27
77°
58°
28
77°
59°
29
80°
60°
30
75°
60°
31
78°
59°
1
78°
59°
2
79°
60°
3
77°
60°
4
81°
59°
5
74°
56°
6
76°
58°
7
80°
59°
8
75°
52°
9
73°
51°
10
73°
52°
11
74°
56°
12
73°
55°
13
76°
59°
14
78°
60°
15
78°
57°
16
73°
56°
17
74°
50°
18
74°
49°
19
75°
56°
20
77°
58°
21
76°
57°
22
78°
51°
23
75°
51°
24
73°
49°
25
73°
51°
26
75°
50°
27
72°
49°
28
72°
49°
29
76°
55°
30
78°
55°
31
78°
54°
1
77°
56°
2
78°
54°
3
77°
48°
4
70°
45°
5
69°
49°
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 69° to 81°, with overnight lows between 45° and 60°. The average high for August is 76° 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 Mcdonough. See also: September | October | November.