S
M
T
W
T
F
S
30
95°
76°
31
N/A
1
83°
77°
2
90°
80°
3
89°
78°
4
90°
78°
5
91°
75°
6
91°
74°
7
91°
76°
8
93°
74°
9
91°
75°
10
92°
74°
11
89°
69°
12
86°
71°
13
87°
73°
14
88°
73°
15
86°
73°
16
89°
72°
17
90°
73°
18
88°
72°
19
87°
72°
20
85°
71°
21
84°
72°
22
81°
72°
23
82°
71°
24
83°
71°
25
84°
70°
26
86°
69°
27
88°
70°
28
89°
66°
29
88°
67°
30
88°
69°
1
87°
70°
2
83°
69°
3
84°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Baytown
Baytown's September 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 66° and 80°. The average high for September is 87° with an average low of 72°. 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 Baytown. See also: October | November | December.
