S
M
T
W
T
F
S
30
102°
79°
31
101°
76°
1
100°
75°
2
101°
74°
3
101°
76°
4
101°
75°
5
100°
77°
6
102°
71°
7
102°
77°
8
101°
78°
9
103°
71°
10
86°
70°
11
94°
75°
12
99°
71°
13
98°
73°
14
97°
68°
15
83°
62°
16
84°
61°
17
82°
60°
18
81°
59°
19
79°
57°
20
80°
59°
21
82°
58°
22
87°
64°
23
86°
64°
24
77°
63°
25
77°
63°
26
80°
62°
27
81°
62°
28
80°
61°
29
78°
61°
30
83°
52°
1
71°
49°
2
71°
48°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thomas
Thomas's September 2026 forecast shows daily high temperatures ranging from 70° to 103°, with overnight lows between 48° and 78°. The average high for September is 84° with an average low of 62°. 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 Thomas. See also: October | November | December.
