S
M
T
W
T
F
S
30
93°
70°
31
90°
69°
1
91°
70°
2
89°
67°
3
89°
66°
4
88°
66°
5
88°
67°
6
89°
66°
7
88°
67°
8
89°
69°
9
88°
70°
10
90°
70°
11
89°
69°
12
88°
70°
13
89°
70°
14
88°
69°
15
90°
69°
16
90°
68°
17
88°
69°
18
89°
68°
19
88°
67°
20
88°
66°
21
89°
67°
22
89°
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 88° to 93°, with overnight lows between 63° and 70°. The average high for September is 89° with an average low of 68°. 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.