S
M
T
W
T
F
S
30
94°
69°
31
96°
69°
1
96°
73°
2
95°
71°
3
95°
71°
4
94°
73°
5
94°
73°
6
93°
72°
7
95°
72°
8
95°
73°
9
91°
71°
10
93°
72°
11
92°
71°
12
93°
71°
13
94°
70°
14
93°
70°
15
91°
65°
16
85°
62°
17
83°
68°
18
88°
68°
19
84°
66°
20
84°
65°
21
83°
63°
22
83°
66°
23
86°
66°
24
86°
65°
25
88°
66°
26
89°
65°
27
88°
63°
28
87°
63°
29
86°
62°
30
85°
61°
1
86°
62°
2
87°
63°
3
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glenn Heights
Glenn Heights's September 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 56° and 73°. The average high for September is 89° 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 Glenn Heights. See also: October | November | December.
