S
M
T
W
T
F
S
30
90°
68°
31
91°
70°
1
90°
70°
2
88°
69°
3
90°
69°
4
89°
65°
5
87°
67°
6
89°
69°
7
90°
68°
8
88°
68°
9
89°
67°
10
89°
68°
11
88°
69°
12
88°
68°
13
88°
66°
14
87°
63°
15
84°
64°
16
86°
64°
17
86°
66°
18
87°
65°
19
86°
65°
20
85°
66°
21
82°
66°
22
86°
65°
23
86°
65°
24
85°
62°
25
84°
59°
26
79°
58°
27
Hist. Avg.
83°
62°
28
Hist. Avg.
82°
61°
29
Hist. Avg.
82°
61°
30
Hist. Avg.
82°
61°
1
Hist. Avg.
82°
60°
2
Hist. Avg.
81°
60°
3
Hist. Avg.
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Glenview
Glenview's September 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 58° and 70°. The average high for September is 87° with an average low of 66°. 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.