S
M
T
W
T
F
S
30
91°
71°
31
91°
72°
1
92°
69°
2
90°
69°
3
91°
70°
4
93°
69°
5
92°
69°
6
92°
70°
7
91°
70°
8
92°
71°
9
92°
68°
10
91°
66°
11
88°
66°
12
90°
67°
13
89°
65°
14
86°
64°
15
87°
63°
16
86°
65°
17
89°
64°
18
91°
68°
19
87°
68°
20
90°
67°
21
86°
64°
22
85°
63°
23
Hist. Avg.
89°
69°
24
Hist. Avg.
89°
68°
25
Hist. Avg.
89°
68°
26
Hist. Avg.
88°
68°
27
Hist. Avg.
88°
67°
28
Hist. Avg.
88°
67°
29
Hist. Avg.
88°
67°
30
Hist. Avg.
88°
66°
1
Hist. Avg.
87°
66°
2
Hist. Avg.
87°
66°
3
Hist. Avg.
87°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in New Caney
New Caney's September 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 63° and 72°. The average high for September is 90° with an average low of 67°. 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.