S
M
T
W
T
F
S
30
87°
64°
31
82°
72°
1
93°
74°
2
77°
72°
3
89°
72°
4
89°
74°
5
84°
70°
6
83°
66°
7
82°
66°
8
85°
64°
9
89°
71°
10
90°
75°
11
81°
69°
12
83°
65°
13
85°
71°
14
78°
62°
15
79°
58°
16
83°
62°
17
84°
69°
18
84°
59°
19
77°
62°
20
76°
63°
21
71°
62°
22
69°
60°
23
69°
60°
24
72°
61°
25
75°
59°
26
74°
58°
27
75°
59°
28
76°
60°
29
75°
57°
30
73°
56°
1
71°
57°
2
77°
61°
3
68°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Upper Darby Township
Upper Darby Township's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 56° and 69°. The average high for September is 74° with an average low of 60°. 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 Upper Darby Township. See also: October | November | December.
