S
M
T
W
T
F
S
30
83°
54°
31
78°
67°
1
90°
68°
2
75°
66°
3
85°
67°
4
83°
67°
5
79°
59°
6
78°
56°
7
77°
54°
8
81°
51°
9
86°
57°
10
83°
68°
11
82°
59°
12
77°
54°
13
82°
66°
14
72°
51°
15
75°
45°
16
83°
52°
17
81°
64°
18
81°
55°
19
73°
63°
20
71°
60°
21
71°
57°
22
61°
53°
23
59°
54°
24
66°
54°
25
65°
53°
26
68°
51°
27
66°
50°
28
69°
51°
29
72°
52°
30
71°
53°
1
72°
50°
2
73°
55°
3
64°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lebanon
Lebanon's September 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 50° and 63°. The average high for September is 69° with an average low of 54°. 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 Lebanon. See also: October | November | December.
