S
M
T
W
T
F
S
30
76°
47°
31
85°
53°
1
69°
57°
2
63°
56°
3
60°
54°
4
65°
54°
5
72°
53°
6
64°
56°
7
73°
53°
8
81°
49°
9
87°
52°
10
84°
52°
11
71°
50°
12
67°
52°
13
68°
46°
14
74°
45°
15
74°
47°
16
86°
52°
17
86°
53°
18
83°
54°
19
76°
53°
20
76°
54°
21
77°
53°
22
80°
53°
23
80°
52°
24
76°
47°
25
69°
52°
26
67°
47°
27
67°
45°
28
68°
44°
29
67°
44°
30
67°
43°
1
70°
44°
2
70°
49°
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 67° to 86°, with overnight lows between 43° and 54°. The average high for September is 73° with an average low of 49°. 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.
