S
M
T
W
T
F
S
30
94°
64°
31
99°
73°
1
98°
72°
2
N/A
3
97°
71°
4
95°
72°
5
94°
68°
6
87°
63°
7
90°
64°
8
91°
67°
9
91°
68°
10
92°
65°
11
88°
60°
12
85°
62°
13
86°
60°
14
84°
59°
15
83°
56°
16
79°
60°
17
80°
60°
18
75°
60°
19
78°
60°
20
76°
59°
21
78°
59°
22
81°
58°
23
78°
55°
24
74°
56°
25
82°
57°
26
79°
52°
27
72°
47°
28
71°
46°
29
70°
45°
30
71°
47°
1
70°
45°
2
71°
52°
3
74°
53°
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 70° to 97°, with overnight lows between 45° and 72°. The average high for September is 81° with an average low of 58°. 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.
