S
M
T
W
T
F
S
30
94°
73°
31
94°
72°
1
93°
73°
2
93°
73°
3
92°
72°
4
93°
73°
5
92°
71°
6
91°
72°
7
92°
72°
8
91°
71°
9
92°
72°
10
92°
72°
11
93°
71°
12
92°
72°
13
92°
72°
14
91°
71°
15
92°
71°
16
91°
70°
17
91°
70°
18
90°
69°
19
91°
70°
20
90°
70°
21
89°
67°
22
86°
65°
23
84°
63°
24
88°
64°
25
90°
67°
26
89°
66°
27
89°
66°
28
85°
67°
29
82°
67°
30
82°
66°
1
86°
66°
2
85°
65°
3
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Caney
New Caney's September 2026 forecast shows daily high temperatures ranging from 82° to 94°, with overnight lows between 63° and 73°. The average high for September is 90° with an average low of 69°. 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 New Caney. See also: October | November | December.