S
M
T
W
T
F
S
30
77°
56°
31
75°
56°
1
75°
62°
2
76°
64°
3
80°
63°
4
83°
64°
5
83°
61°
6
79°
55°
7
77°
56°
8
76°
55°
9
75°
53°
10
73°
53°
11
73°
54°
12
74°
54°
13
76°
59°
14
78°
59°
15
75°
53°
16
73°
55°
17
72°
54°
18
73°
58°
19
74°
50°
20
74°
53°
21
72°
51°
22
77°
49°
23
70°
48°
24
70°
48°
25
69°
53°
26
71°
50°
27
71°
54°
28
72°
54°
29
73°
46°
30
69°
49°
1
67°
54°
2
74°
53°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lansdale
Lansdale's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 46° and 64°. The average high for September is 74° with an average low of 54°. 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 Lansdale. See also: October | November | December.
