S
M
T
W
T
F
S
30
86°
63°
31
88°
62°
1
89°
64°
2
90°
65°
3
86°
66°
4
89°
64°
5
89°
65°
6
88°
65°
7
89°
60°
8
84°
65°
9
88°
65°
10
88°
64°
11
83°
65°
12
87°
65°
13
88°
59°
14
81°
57°
15
81°
57°
16
82°
58°
17
81°
61°
18
85°
62°
19
86°
61°
20
85°
62°
21
79°
61°
22
84°
62°
23
83°
61°
24
84°
54°
25
78°
53°
26
80°
58°
27
77°
52°
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 77° to 90°, with overnight lows between 52° and 66°. The average high for September is 85° with an average low of 61°. 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.
