S
M
T
W
T
F
S
30
93°
64°
31
89°
65°
1
87°
64°
2
87°
65°
3
91°
65°
4
92°
67°
5
94°
66°
6
92°
66°
7
90°
67°
8
90°
66°
9
91°
66°
10
93°
62°
11
93°
65°
12
93°
66°
13
92°
66°
14
93°
65°
15
93°
66°
16
92°
66°
17
92°
65°
18
87°
61°
19
82°
57°
20
82°
57°
21
81°
56°
22
82°
57°
23
83°
60°
24
82°
57°
25
82°
57°
26
83°
58°
27
81°
56°
28
81°
58°
29
82°
60°
30
80°
58°
1
80°
59°
2
81°
57°
3
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glendora
Glendora's September 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 56° and 67°. 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 Glendora. See also: October | November | December.
