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
87°
68°
12
97°
70°
13
99°
73°
14
95°
74°
15
96°
71°
16
92°
67°
17
93°
68°
18
89°
60°
19
83°
59°
20
78°
58°
21
81°
56°
22
81°
57°
23
83°
57°
24
82°
56°
25
86°
62°
26
86°
62°
27
85°
61°
28
85°
60°
29
84°
61°
30
83°
61°
1
83°
59°
2
82°
59°
3
83°
58°
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 78° to 99°, with overnight lows between 56° and 74°. The average high for September is 87° with an average low of 62°. 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.