S
M
T
W
T
F
S
26
95°
74°
27
95°
74°
28
96°
73°
29
96°
74°
30
95°
74°
31
96°
73°
1
96°
75°
2
97°
74°
3
96°
74°
4
95°
73°
5
96°
74°
6
96°
73°
7
94°
72°
8
94°
71°
9
95°
72°
10
87°
72°
11
90°
72°
12
93°
71°
13
92°
72°
14
93°
71°
15
94°
70°
16
94°
70°
17
93°
62°
18
86°
60°
19
83°
59°
20
82°
59°
21
82°
60°
22
83°
61°
23
82°
63°
24
83°
61°
25
85°
66°
26
88°
65°
27
87°
59°
28
83°
59°
29
85°
67°
30
89°
67°
31
90°
63°
1
90°
59°
2
81°
63°
3
83°
65°
4
88°
67°
5
88°
57°
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 81° to 97°, with overnight lows between 57° and 75°. The average high for August is 90° with an average low of 68°. 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.