S
M
T
W
T
F
S
30
83°
56°
31
81°
66°
1
90°
72°
2
73°
69°
3
90°
71°
4
86°
65°
5
79°
63°
6
75°
59°
7
79°
58°
8
79°
62°
9
79°
66°
10
84°
62°
11
74°
58°
12
75°
57°
13
79°
58°
14
79°
59°
15
82°
60°
16
81°
56°
17
73°
53°
18
71°
52°
19
77°
56°
20
78°
57°
21
77°
55°
22
75°
58°
23
70°
58°
24
75°
55°
25
73°
54°
26
75°
58°
27
75°
57°
28
74°
51°
29
66°
48°
30
68°
50°
1
66°
47°
2
65°
51°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Flourtown
Flourtown's September 2026 forecast shows daily high temperatures ranging from 63° to 90°, with overnight lows between 47° and 71°. The average high for September is 76° with an average low of 57°. 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 Flourtown. See also: October | November | December.