S
M
T
W
T
F
S
30
100°
62°
31
101°
71°
1
100°
70°
2
99°
71°
3
98°
71°
4
101°
70°
5
103°
71°
6
105°
72°
7
102°
71°
8
103°
69°
9
101°
75°
10
98°
73°
11
90°
69°
12
98°
69°
13
95°
72°
14
96°
73°
15
98°
73°
16
96°
72°
17
96°
67°
18
94°
63°
19
94°
63°
20
88°
64°
21
81°
60°
22
81°
61°
23
83°
60°
24
86°
60°
25
86°
59°
26
81°
55°
27
85°
61°
28
85°
61°
29
85°
61°
30
84°
60°
1
85°
61°
2
84°
61°
3
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glenwood
Glenwood's September 2026 forecast shows daily high temperatures ranging from 81° to 98°, with overnight lows between 55° and 73°. The average high for September is 88° with an average low of 63°. 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 Glenwood. See also: October | November | December.