S
M
T
W
T
F
S
30
84°
66°
31
88°
65°
1
85°
65°
2
90°
64°
3
90°
62°
4
89°
61°
5
82°
64°
6
88°
64°
7
85°
60°
8
81°
57°
9
82°
62°
10
81°
63°
11
87°
62°
12
87°
63°
13
88°
63°
14
88°
61°
15
86°
61°
16
79°
60°
17
81°
53°
18
78°
53°
19
79°
50°
20
77°
50°
21
76°
51°
22
77°
55°
23
78°
55°
24
84°
57°
25
83°
58°
26
83°
57°
27
84°
58°
28
82°
55°
29
81°
54°
30
81°
53°
1
78°
52°
2
82°
54°
3
74°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glenview
Glenview's September 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 47° and 66°. The average high for September is 83° with an average low of 58°. 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 Glenview. See also: October | November | December.