S
M
T
W
T
F
S
26
71°
43°
27
75°
41°
28
72°
40°
29
77°
43°
30
78°
42°
31
73°
42°
1
70°
38°
2
70°
38°
3
71°
40°
4
70°
39°
5
71°
41°
6
71°
40°
7
70°
40°
8
71°
37°
9
71°
37°
10
72°
41°
11
73°
41°
12
71°
40°
13
69°
35°
14
70°
40°
15
69°
39°
16
70°
37°
17
70°
41°
18
72°
38°
19
74°
39°
20
74°
40°
21
72°
42°
22
74°
42°
23
74°
41°
24
73°
42°
25
74°
43°
26
74°
42°
27
71°
42°
28
69°
40°
29
67°
37°
30
67°
36°
31
70°
33°
1
72°
34°
2
72°
33°
3
71°
37°
4
68°
34°
5
71°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Carterville
Carterville's August 2026 forecast shows daily high temperatures ranging from 67° to 78°, with overnight lows between 33° and 43°. The average high for August is 72° with an average low of 39°. 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 Carterville. See also: September | October | November.