S
M
T
W
T
F
S
30
88°
70°
31
91°
70°
1
95°
70°
2
95°
72°
3
95°
72°
4
93°
70°
5
90°
70°
6
93°
70°
7
86°
70°
8
88°
70°
9
90°
66°
10
90°
70°
11
90°
73°
12
86°
72°
13
90°
70°
14
91°
66°
15
91°
68°
16
88°
70°
17
88°
61°
18
93°
63°
19
91°
68°
20
88°
68°
21
91°
66°
22
88°
70°
23
82°
68°
24
70°
58°
25
79°
53°
26
82°
54°
27
79°
54°
28
82°
55°
29
86°
58°
30
85°
65°
1
81°
66°
2
82°
64°
3
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thomaston
Thomaston's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 53° and 66°. The average high for September is 81° 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 September weather will actually feel in Thomaston. See also: October | November | December.
