S
M
T
W
T
F
S
31
76°
50°
1
82°
50°
2
82°
52°
3
83°
56°
4
70°
53°
5
76°
51°
6
71°
52°
7
71°
47°
8
73°
45°
9
78°
46°
10
83°
51°
11
83°
55°
12
84°
54°
13
87°
54°
14
86°
64°
15
89°
60°
16
86°
56°
17
87°
57°
18
88°
56°
19
88°
55°
20
89°
61°
21
82°
67°
22
70°
65°
23
80°
64°
24
78°
64°
25
76°
61°
26
79°
54°
27
83°
54°
28
88°
58°
29
89°
58°
30
85°
58°
1
84°
54°
2
85°
53°
3
83°
54°
4
84°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Houston
Houston's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Houston. See also: October | November | December.
