S
M
T
W
T
F
S
30
93°
69°
31
95°
71°
1
97°
71°
2
99°
74°
3
99°
74°
4
99°
76°
5
97°
73°
6
94°
70°
7
90°
70°
8
92°
69°
9
91°
70°
10
91°
68°
11
87°
64°
12
83°
63°
13
86°
65°
14
83°
60°
15
81°
64°
16
79°
65°
17
81°
63°
18
84°
64°
19
86°
64°
20
83°
63°
21
83°
62°
22
85°
62°
23
85°
61°
24
84°
62°
25
85°
62°
26
85°
60°
27
83°
61°
28
84°
61°
29
83°
60°
30
84°
60°
1
83°
59°
2
82°
59°
3
82°
58°
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 79° to 99°, with overnight lows between 58° and 76°. The average high for September is 87° with an average low of 65°. 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.
