S
M
T
W
T
F
S
30
77°
57°
31
75°
58°
1
75°
63°
2
76°
65°
3
80°
64°
4
83°
65°
5
83°
63°
6
80°
57°
7
77°
57°
8
76°
56°
9
75°
55°
10
73°
54°
11
73°
55°
12
74°
55°
13
76°
60°
14
78°
61°
15
75°
55°
16
73°
57°
17
72°
56°
18
73°
59°
19
74°
52°
20
74°
55°
21
72°
52°
22
77°
51°
23
70°
50°
24
70°
50°
25
69°
55°
26
71°
52°
27
71°
56°
28
72°
56°
29
73°
48°
30
69°
51°
1
67°
56°
2
73°
54°
3
72°
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 67° to 83°, with overnight lows between 48° and 65°. The average high for September is 74° with an average low of 56°. 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.