S
M
T
W
T
F
S
30
65°
42°
31
65°
43°
1
67°
48°
2
69°
50°
3
67°
54°
4
69°
54°
5
75°
51°
6
76°
44°
7
69°
42°
8
66°
42°
9
68°
41°
10
66°
47°
11
67°
49°
12
63°
44°
13
66°
49°
14
71°
49°
15
72°
48°
16
67°
50°
17
64°
48°
18
67°
47°
19
68°
41°
20
65°
45°
21
68°
39°
22
67°
36°
23
59°
37°
24
59°
38°
25
60°
41°
26
59°
35°
27
58°
36°
28
58°
39°
29
56°
35°
30
56°
35°
1
57°
37°
2
60°
34°
3
55°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in The Glen
The Glen's September 2026 forecast shows daily high temperatures ranging from 55° to 76°, with overnight lows between 34° and 54°. The average high for September is 65° with an average low of 43°. 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 The Glen. See also: October | November | December.