S
M
T
W
T
F
S
30
91°
71°
31
93°
70°
1
93°
70°
2
91°
69°
3
88°
70°
4
89°
67°
5
86°
67°
6
87°
68°
7
86°
68°
8
89°
69°
9
90°
69°
10
86°
68°
11
85°
63°
12
88°
68°
13
91°
67°
14
88°
61°
15
85°
61°
16
84°
60°
17
83°
61°
18
85°
62°
19
89°
61°
20
89°
66°
21
88°
65°
22
87°
66°
23
88°
65°
24
86°
61°
25
86°
61°
26
87°
62°
27
87°
61°
28
86°
63°
29
87°
63°
30
87°
62°
1
86°
62°
2
86°
61°
3
85°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kingwood
Kingwood's September 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 56° and 71°. The average high for September is 87° with an average low of 65°. 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 Kingwood. See also: October | November | December.