S
M
T
W
T
F
S
26
88°
57°
27
82°
53°
28
83°
52°
29
79°
54°
30
82°
50°
31
82°
50°
1
84°
51°
2
83°
53°
3
89°
52°
4
90°
52°
5
91°
56°
6
92°
57°
7
91°
55°
8
89°
54°
9
89°
52°
10
87°
50°
11
87°
51°
12
83°
52°
13
81°
50°
14
82°
50°
15
81°
47°
16
81°
51°
17
82°
49°
18
80°
47°
19
80°
51°
20
81°
48°
21
81°
48°
22
82°
50°
23
80°
50°
24
80°
45°
25
81°
48°
26
80°
47°
27
79°
46°
28
82°
48°
29
82°
49°
30
83°
50°
31
84°
51°
1
85°
52°
2
81°
46°
3
76°
47°
4
76°
46°
5
77°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Carbondale
Carbondale's August 2026 forecast shows daily high temperatures ranging from 76° to 92°, with overnight lows between 44° and 57°. The average high for August is 83° with an average low of 50°. 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 Carbondale. See also: September | October | November.