S
M
T
W
T
F
S
30
93°
81°
31
91°
81°
1
84°
79°
2
89°
80°
3
90°
79°
4
91°
80°
5
90°
79°
6
89°
79°
7
91°
80°
8
92°
78°
9
90°
79°
10
91°
77°
11
88°
75°
12
86°
77°
13
87°
78°
14
87°
78°
15
85°
78°
16
87°
77°
17
87°
77°
18
86°
76°
19
85°
77°
20
85°
77°
21
83°
76°
22
82°
76°
23
82°
75°
24
83°
76°
25
82°
75°
26
85°
76°
27
86°
75°
28
88°
73°
29
87°
75°
30
88°
75°
1
87°
74°
2
83°
75°
3
83°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Texas City
Texas City's September 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 73° and 80°. The average high for September is 87° with an average low of 77°. 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 City. See also: October | November | December.