S
M
T
W
T
F
S
30
68°
44°
31
68°
54°
1
71°
44°
2
69°
46°
3
69°
45°
4
70°
45°
5
68°
47°
6
68°
51°
7
66°
50°
8
73°
46°
9
75°
44°
10
72°
48°
11
73°
49°
12
73°
49°
13
74°
50°
14
74°
50°
15
73°
51°
16
73°
49°
17
74°
42°
18
71°
39°
19
59°
35°
20
60°
38°
21
61°
38°
22
Hist. Avg.
64°
39°
23
Hist. Avg.
63°
39°
24
Hist. Avg.
63°
38°
25
Hist. Avg.
62°
38°
26
Hist. Avg.
62°
37°
27
Hist. Avg.
61°
37°
28
Hist. Avg.
61°
36°
29
Hist. Avg.
60°
36°
30
Hist. Avg.
60°
36°
1
Hist. Avg.
59°
35°
2
Hist. Avg.
59°
35°
3
Hist. Avg.
58°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Langdon
Langdon's September 2026 forecast shows daily high temperatures ranging from 59° to 75°, with overnight lows between 35° and 54°. The average high for September is 70° with an average low of 46°. 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 Langdon. See also: October | November | December.