S
M
T
W
T
F
S
30
87°
67°
31
86°
61°
1
82°
59°
2
80°
60°
3
81°
61°
4
81°
60°
5
82°
60°
6
78°
61°
7
78°
59°
8
79°
63°
9
80°
59°
10
78°
58°
11
79°
59°
12
79°
58°
13
78°
59°
14
77°
58°
15
78°
59°
16
78°
56°
17
77°
57°
18
76°
56°
19
76°
61°
20
74°
61°
21
80°
60°
22
Hist. Avg.
78°
58°
23
Hist. Avg.
78°
57°
24
Hist. Avg.
77°
57°
25
Hist. Avg.
77°
56°
26
Hist. Avg.
76°
56°
27
Hist. Avg.
76°
55°
28
Hist. Avg.
76°
55°
29
Hist. Avg.
75°
54°
30
Hist. Avg.
75°
54°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
74°
53°
3
Hist. Avg.
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Langley Park
Langley Park's September 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 56° and 67°. The average high for September is 79° with an average low of 60°. 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 Langley Park. See also: October | November | December.