S
M
T
W
T
F
S
30
86°
67°
31
87°
66°
1
89°
68°
2
89°
68°
3
90°
67°
4
90°
67°
5
84°
66°
6
84°
62°
7
85°
62°
8
87°
64°
9
89°
64°
10
88°
65°
11
89°
65°
12
88°
64°
13
87°
63°
14
88°
64°
15
87°
63°
16
81°
59°
17
86°
64°
18
83°
62°
19
Hist. Avg.
84°
63°
20
Hist. Avg.
84°
63°
21
Hist. Avg.
84°
63°
22
Hist. Avg.
83°
62°
23
Hist. Avg.
83°
62°
24
Hist. Avg.
82°
62°
25
Hist. Avg.
82°
61°
26
Hist. Avg.
82°
61°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
81°
60°
29
Hist. Avg.
81°
60°
30
Hist. Avg.
80°
59°
1
Hist. Avg.
80°
59°
2
Hist. Avg.
80°
58°
3
Hist. Avg.
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Texas
Texas's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 59° and 68°. The average high for September is 87° with an average low of 65°. 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.
