S
M
T
W
T
F
S
30
92°
65°
31
93°
68°
1
94°
69°
2
93°
69°
3
93°
68°
4
92°
69°
5
93°
68°
6
92°
64°
7
91°
61°
8
84°
65°
9
83°
66°
10
84°
67°
11
89°
66°
12
89°
67°
13
90°
65°
14
90°
58°
15
86°
57°
16
79°
56°
17
79°
56°
18
80°
60°
19
83°
56°
20
79°
55°
21
78°
58°
22
78°
59°
23
81°
62°
24
85°
63°
25
85°
63°
26
86°
62°
27
85°
60°
28
83°
58°
29
82°
57°
30
83°
57°
1
81°
56°
2
84°
60°
3
76°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glenoak
Glenoak's September 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 50° and 69°. The average high for September is 86° 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 Glenoak. See also: October | November | December.