S
M
T
W
T
F
S
26
81°
54°
27
82°
59°
28
79°
66°
29
77°
67°
30
76°
64°
31
83°
60°
1
83°
66°
2
80°
70°
3
77°
69°
4
79°
65°
5
81°
65°
6
84°
65°
7
84°
65°
8
83°
64°
9
86°
62°
10
85°
61°
11
82°
60°
12
80°
57°
13
79°
56°
14
81°
59°
15
77°
55°
16
76°
55°
17
76°
59°
18
77°
58°
19
76°
55°
20
75°
55°
21
76°
60°
22
76°
59°
23
77°
56°
24
75°
54°
25
76°
55°
26
75°
54°
27
74°
53°
28
74°
53°
29
75°
52°
30
74°
53°
31
77°
59°
1
79°
60°
2
79°
59°
3
74°
56°
4
74°
52°
5
73°
51°
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 73° to 86°, with overnight lows between 51° and 70°. The average high for August is 78° with an average low of 59°. 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.