S
M
T
W
T
F
S
26
62°
37°
27
71°
33°
28
64°
34°
29
68°
46°
30
61°
47°
1
65°
35°
2
60°
44°
3
61°
37°
4
74°
33°
5
83°
46°
6
69°
54°
7
66°
43°
8
65°
39°
9
65°
46°
10
77°
48°
11
63°
45°
12
68°
38°
13
71°
53°
14
65°
46°
15
66°
48°
16
80°
59°
17
85°
60°
18
84°
60°
19
92°
65°
20
81°
53°
21
73°
51°
22
72°
54°
23
70°
52°
24
71°
53°
25
71°
52°
26
75°
51°
27
69°
51°
28
70°
50°
29
69°
52°
30
70°
56°
31
77°
54°
1
71°
52°
2
71°
50°
3
70°
50°
4
72°
51°
5
73°
58°
6
78°
59°
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 65° to 92°, with overnight lows between 46° and 65°. The average high for May is 74° with an average low of 54°. 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.