S
M
T
W
T
F
S
30
79°
63°
31
73°
55°
1
70°
55°
2
69°
56°
3
68°
54°
4
69°
55°
5
73°
56°
6
64°
56°
7
72°
61°
8
82°
60°
9
84°
62°
10
86°
68°
11
79°
66°
12
79°
61°
13
75°
60°
14
78°
62°
15
70°
57°
16
67°
55°
17
65°
49°
18
69°
47°
19
72°
52°
20
69°
50°
21
65°
49°
22
70°
46°
23
79°
48°
24
78°
50°
25
77°
49°
26
78°
48°
27
77°
48°
28
77°
46°
29
78°
45°
30
72°
44°
1
67°
43°
2
70°
44°
3
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oak Glen
Oak Glen's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 43° and 52°. The average high for September is 73° with an average low of 47°. 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 Oak Glen. See also: October | November | December.
