S
M
T
W
T
F
S
30
88°
67°
31
89°
66°
1
84°
63°
2
84°
61°
3
85°
61°
4
83°
60°
5
83°
60°
6
86°
62°
7
85°
63°
8
87°
59°
9
84°
59°
10
86°
62°
11
88°
64°
12
85°
64°
13
87°
63°
14
87°
63°
15
86°
62°
16
87°
63°
17
86°
64°
18
86°
62°
19
85°
61°
20
83°
61°
21
84°
59°
22
84°
54°
23
78°
59°
24
Hist. Avg.
80°
51°
25
Hist. Avg.
80°
51°
26
Hist. Avg.
79°
50°
27
Hist. Avg.
79°
50°
28
Hist. Avg.
78°
50°
29
Hist. Avg.
78°
49°
30
Hist. Avg.
78°
49°
1
Hist. Avg.
77°
48°
2
Hist. Avg.
77°
48°
3
Hist. Avg.
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lebanon
Lebanon's September 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 54° and 67°. The average high for September is 85° with an average low of 62°. 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.
