S
M
T
W
T
F
S
30
94°
68°
31
96°
67°
1
96°
70°
2
95°
67°
3
93°
68°
4
94°
70°
5
94°
71°
6
92°
71°
7
92°
70°
8
94°
71°
9
92°
70°
10
92°
70°
11
93°
69°
12
94°
70°
13
94°
70°
14
93°
69°
15
92°
68°
16
87°
66°
17
86°
68°
18
86°
68°
19
87°
67°
20
88°
67°
21
86°
66°
22
86°
67°
23
87°
66°
24
88°
66°
25
90°
65°
26
89°
63°
27
90°
64°
28
88°
64°
29
87°
63°
30
88°
62°
1
86°
63°
2
88°
64°
3
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thorndale
Thorndale's September 2026 forecast shows daily high temperatures ranging from 82° to 96°, with overnight lows between 58° and 71°. The average high for September is 90° with an average low of 67°. 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 Thorndale. See also: October | November | December.
