S
M
T
W
T
F
S
26
84°
55°
27
83°
58°
28
80°
63°
29
75°
59°
30
66°
49°
1
67°
45°
2
66°
43°
3
68°
49°
4
81°
58°
5
75°
62°
6
63°
55°
7
64°
42°
8
69°
53°
9
71°
50°
10
73°
57°
11
70°
54°
12
72°
54°
13
75°
56°
14
78°
60°
15
77°
57°
16
79°
56°
17
79°
59°
18
79°
61°
19
81°
61°
20
80°
60°
21
78°
56°
22
75°
53°
23
74°
53°
24
74°
54°
25
75°
56°
26
76°
54°
27
75°
54°
28
77°
56°
29
78°
57°
30
82°
63°
31
81°
64°
1
79°
64°
2
80°
63°
3
80°
60°
4
81°
60°
5
82°
65°
6
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lebanon
Lebanon's May 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 42° and 66°. The average high for May is 76° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Lebanon. See also: June | July | August.