S
M
T
W
T
F
S
30
53°
37°
31
54°
38°
1
53°
43°
2
54°
42°
3
53°
42°
4
62°
44°
5
57°
41°
6
55°
39°
7
52°
40°
8
51°
38°
9
52°
37°
10
50°
39°
11
50°
38°
12
52°
35°
13
49°
32°
14
48°
33°
15
48°
32°
16
47°
34°
17
47°
34°
18
48°
33°
19
47°
31°
20
47°
31°
21
49°
32°
22
48°
31°
23
46°
31°
24
46°
35°
25
46°
37°
26
49°
35°
27
51°
37°
28
49°
35°
29
48°
36°
30
44°
36°
1
46°
31°
2
46°
29°
3
42°
32°
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 42° to 62°, with overnight lows between 29° and 44°. The average high for September is 50° with an average low of 36°. 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.
