S
M
T
W
T
F
S
30
92°
73°
31
90°
75°
1
90°
75°
2
89°
74°
3
89°
74°
4
90°
72°
5
88°
71°
6
89°
71°
7
92°
75°
8
90°
75°
9
93°
73°
10
91°
74°
11
92°
74°
12
93°
73°
13
90°
71°
14
91°
72°
15
89°
72°
16
87°
73°
17
Hist. Avg.
88°
72°
18
Hist. Avg.
88°
71°
19
Hist. Avg.
88°
71°
20
Hist. Avg.
88°
71°
21
Hist. Avg.
87°
70°
22
Hist. Avg.
87°
70°
23
Hist. Avg.
87°
70°
24
Hist. Avg.
87°
70°
25
Hist. Avg.
86°
69°
26
Hist. Avg.
86°
69°
27
Hist. Avg.
86°
69°
28
Hist. Avg.
86°
68°
29
Hist. Avg.
85°
68°
30
Hist. Avg.
85°
68°
1
Hist. Avg.
85°
68°
2
Hist. Avg.
85°
67°
3
Hist. Avg.
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Channelview
Channelview's September 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 71° and 75°. The average high for September is 90° with an average low of 73°. 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 Channelview. See also: October | November | December.