S
M
T
W
T
F
S
30
73°
63°
31
77°
61°
1
77°
55°
2
81°
54°
3
81°
63°
4
82°
64°
5
79°
59°
6
91°
57°
7
N/A
8
70°
49°
9
70°
51°
10
71°
56°
11
74°
51°
12
76°
53°
13
78°
57°
14
77°
57°
15
76°
55°
16
74°
52°
17
75°
53°
18
75°
54°
19
77°
55°
20
70°
51°
21
72°
54°
22
72°
54°
23
73°
53°
24
73°
53°
25
72°
52°
26
71°
52°
27
71°
51°
28
70°
52°
29
71°
50°
30
69°
52°
1
70°
50°
2
69°
51°
3
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Langon
Langon's September 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 49° and 57°. The average high for September is 73° with an average low of 53°. 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 Langon. See also: October | November | December.