S
M
T
W
T
F
S
26
88°
72°
27
88°
77°
28
93°
73°
29
90°
73°
30
88°
70°
31
90°
68°
1
86°
72°
2
90°
72°
3
86°
70°
4
83°
70°
5
85°
69°
6
88°
68°
7
87°
70°
8
90°
69°
9
88°
68°
10
89°
70°
11
90°
69°
12
91°
67°
13
89°
69°
14
88°
70°
15
89°
69°
16
88°
70°
17
87°
69°
18
92°
72°
19
94°
72°
20
94°
71°
21
93°
71°
22
91°
70°
23
92°
71°
24
92°
72°
25
91°
71°
26
92°
71°
27
91°
70°
28
90°
71°
29
91°
71°
30
92°
70°
31
91°
71°
1
90°
70°
2
92°
70°
3
91°
69°
4
88°
67°
5
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Thomaston
Thomaston's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 67° and 72°. The average high for August is 90° with an average low of 70°. 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 Thomaston. See also: September | October | November.