S
M
T
W
T
F
S
30
75°
45°
31
70°
44°
1
69°
49°
2
73°
52°
3
69°
47°
4
67°
51°
5
66°
50°
6
74°
45°
7
70°
45°
8
70°
46°
9
67°
43°
10
66°
47°
11
67°
40°
12
65°
42°
13
64°
40°
14
67°
49°
15
70°
42°
16
66°
38°
17
63°
37°
18
61°
37°
19
60°
38°
20
61°
40°
21
61°
41°
22
59°
40°
23
59°
44°
24
65°
44°
25
65°
42°
26
64°
46°
27
66°
39°
28
65°
34°
29
56°
35°
30
57°
43°
1
56°
44°
2
61°
44°
3
62°
43°
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 56° to 75°, with overnight lows between 34° and 52°. 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.