S
M
T
W
T
F
S
30
82°
65°
31
82°
64°
1
83°
61°
2
75°
56°
3
74°
57°
4
75°
56°
5
74°
56°
6
78°
62°
7
82°
63°
8
81°
62°
9
79°
62°
10
81°
63°
11
82°
62°
12
81°
63°
13
82°
63°
14
82°
54°
15
73°
53°
16
72°
52°
17
71°
53°
18
71°
51°
19
70°
50°
20
70°
50°
21
76°
51°
22
76°
56°
23
77°
49°
24
77°
48°
25
69°
47°
26
70°
49°
27
71°
55°
28
74°
55°
29
74°
46°
30
68°
46°
1
66°
53°
2
67°
53°
3
70°
52°
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 66° to 83°, with overnight lows between 46° and 65°. The average high for September is 75° with an average low of 55°. 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.
