S
M
T
W
T
F
S
26
71°
54°
27
70°
54°
28
73°
57°
29
71°
57°
30
70°
56°
31
68°
53°
1
68°
52°
2
67°
51°
3
69°
53°
4
72°
57°
5
72°
57°
6
72°
56°
7
68°
56°
8
70°
54°
9
70°
57°
10
69°
56°
11
72°
57°
12
73°
57°
13
73°
56°
14
72°
56°
15
71°
57°
16
72°
57°
17
71°
55°
18
72°
52°
19
68°
50°
20
67°
50°
21
67°
49°
22
68°
50°
23
67°
53°
24
67°
50°
25
66°
50°
26
66°
53°
27
67°
54°
28
66°
50°
29
66°
50°
30
67°
48°
31
66°
49°
1
69°
50°
2
69°
53°
3
70°
53°
4
69°
48°
5
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cosby
Cosby's August 2026 forecast shows daily high temperatures ranging from 66° to 73°, with overnight lows between 47° and 57°. The average high for August is 69° with an average low of 53°. 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 Cosby. See also: September | October | November.
