S
M
T
W
T
F
S
30
52°
35°
31
54°
35°
1
56°
38°
2
58°
42°
3
58°
37°
4
71°
39°
5
70°
43°
6
69°
40°
7
63°
46°
8
57°
44°
9
51°
44°
10
55°
36°
11
63°
39°
12
69°
44°
13
58°
39°
14
57°
37°
15
61°
41°
16
60°
43°
17
63°
46°
18
64°
45°
19
57°
42°
20
55°
40°
21
50°
35°
22
44°
33°
23
44°
32°
24
43°
33°
25
43°
34°
26
44°
31°
27
42°
31°
28
42°
30°
29
41°
30°
30
41°
31°
1
42°
35°
2
45°
33°
3
41°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lansdowne
Lansdowne's September 2026 forecast shows daily high temperatures ranging from 41° to 69°, with overnight lows between 30° and 46°. The average high for September is 51° with an average low of 37°. 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 Lansdowne. See also: October | November | December.
