S
M
T
W
T
F
S
26
95°
75°
27
95°
73°
28
92°
72°
29
87°
66°
30
87°
63°
31
78°
63°
1
74°
69°
2
81°
67°
3
86°
62°
4
88°
63°
5
88°
63°
6
77°
70°
7
88°
70°
8
88°
70°
9
90°
70°
10
93°
75°
11
96°
75°
12
94°
72°
13
95°
72°
14
95°
77°
15
95°
76°
16
96°
74°
17
85°
66°
18
88°
64°
19
83°
70°
20
90°
72°
21
86°
66°
22
87°
62°
23
85°
61°
24
83°
64°
25
86°
66°
26
87°
65°
27
86°
61°
28
83°
62°
29
85°
62°
30
82°
58°
31
81°
59°
1
83°
60°
2
84°
62°
3
91°
61°
4
86°
65°
5
79°
63°
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 79° to 91°, with overnight lows between 58° and 66°. The average high for August is 85° with an average low of 62°. 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.