S
M
T
W
T
F
S
30
74°
52°
31
78°
54°
1
70°
57°
2
70°
60°
3
79°
61°
4
80°
59°
5
72°
53°
6
71°
49°
7
79°
44°
8
74°
47°
9
70°
50°
10
82°
58°
11
72°
45°
12
75°
43°
13
71°
60°
14
68°
44°
15
71°
53°
16
77°
56°
17
77°
61°
18
75°
42°
19
67°
53°
20
65°
50°
21
66°
49°
22
65°
46°
23
68°
45°
24
66°
48°
25
68°
51°
26
68°
49°
27
67°
47°
28
69°
44°
29
71°
45°
30
63°
41°
1
66°
46°
2
66°
48°
3
68°
46°
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 63° to 77°, with overnight lows between 41° and 61°. The average high for September is 69° with an average low of 48°. 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.
