S
M
T
W
T
F
S
31
84°
54°
1
90°
54°
2
84°
63°
3
88°
61°
4
75°
63°
5
90°
61°
6
72°
55°
7
77°
50°
8
79°
48°
9
82°
48°
10
86°
55°
11
88°
59°
12
90°
57°
13
91°
59°
14
93°
64°
15
91°
64°
16
91°
61°
17
90°
63°
18
91°
59°
19
93°
59°
20
95°
63°
21
86°
68°
22
84°
66°
23
86°
66°
24
73°
64°
25
81°
63°
26
84°
57°
27
84°
57°
28
88°
57°
29
90°
57°
30
86°
59°
1
88°
59°
2
86°
55°
3
84°
64°
4
86°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Texas
Texas's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Texas. See also: October | November | December.