S
M
T
W
T
F
S
26
66°
47°
27
77°
49°
28
72°
58°
29
64°
47°
30
57°
42°
1
52°
41°
2
53°
31°
3
62°
48°
4
72°
57°
5
71°
48°
6
58°
45°
7
53°
38°
8
58°
43°
9
64°
48°
10
65°
49°
11
65°
48°
12
66°
47°
13
67°
52°
14
73°
53°
15
68°
50°
16
75°
55°
17
77°
56°
18
75°
56°
19
74°
55°
20
78°
52°
21
75°
51°
22
70°
47°
23
67°
46°
24
69°
50°
25
69°
51°
26
70°
49°
27
69°
49°
28
71°
50°
29
72°
50°
30
72°
54°
31
76°
59°
1
73°
55°
2
74°
53°
3
75°
57°
4
76°
57°
5
79°
60°
6
82°
62°
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 53° to 82°, with overnight lows between 31° and 62°. The average high for May is 70° with an average low of 51°. 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.