S
M
T
W
T
F
S
30
82°
56°
31
77°
67°
1
89°
69°
2
72°
69°
3
87°
68°
4
85°
71°
5
81°
63°
6
78°
59°
7
77°
56°
8
81°
53°
9
86°
61°
10
86°
71°
11
80°
58°
12
81°
54°
13
82°
67°
14
74°
57°
15
75°
47°
16
82°
55°
17
81°
66°
18
83°
65°
19
74°
57°
20
73°
63°
21
72°
62°
22
62°
56°
23
67°
52°
24
67°
48°
25
74°
52°
26
66°
56°
27
63°
56°
28
67°
58°
29
69°
58°
30
74°
62°
1
81°
61°
2
86°
59°
3
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Exton
Exton's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Exton. See also: October | November | December.
