S
M
T
W
T
F
S
30
85°
67°
31
91°
72°
1
93°
71°
2
93°
72°
3
94°
74°
4
95°
72°
5
87°
67°
6
79°
65°
7
82°
58°
8
85°
65°
9
90°
71°
10
82°
67°
11
81°
62°
12
79°
68°
13
88°
62°
14
74°
53°
15
90°
69°
16
91°
70°
17
91°
69°
18
79°
62°
19
87°
68°
20
81°
63°
21
80°
62°
22
78°
61°
23
77°
60°
24
76°
54°
25
72°
54°
26
73°
53°
27
73°
55°
28
74°
48°
29
77°
54°
30
76°
55°
1
76°
54°
2
75°
53°
3
76°
53°
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 72° to 91°, with overnight lows between 48° and 70°. The average high for September is 79° with an average low of 59°. 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.
