S
M
T
W
T
F
S
30
88°
72°
31
87°
73°
1
88°
72°
2
87°
70°
3
87°
69°
4
86°
69°
5
86°
70°
6
87°
69°
7
88°
70°
8
89°
72°
9
88°
72°
10
90°
70°
11
90°
70°
12
89°
71°
13
89°
72°
14
88°
71°
15
90°
70°
16
88°
70°
17
89°
71°
18
86°
70°
19
88°
69°
20
88°
69°
21
87°
70°
22
88°
69°
23
88°
69°
24
Hist. Avg.
87°
72°
25
Hist. Avg.
87°
71°
26
Hist. Avg.
86°
71°
27
Hist. Avg.
86°
71°
28
Hist. Avg.
86°
70°
29
Hist. Avg.
86°
70°
30
Hist. Avg.
86°
70°
1
Hist. Avg.
85°
70°
2
Hist. Avg.
85°
69°
3
Hist. Avg.
85°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lower Texas
Lower Texas's September 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 69° and 73°. The average high for September is 88° with an average low of 70°. 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 Lower Texas. See also: October | November | December.
