S
M
T
W
T
F
S
26
66°
34°
27
71°
36°
28
61°
36°
29
54°
44°
30
52°
43°
1
63°
38°
2
55°
37°
3
56°
37°
4
74°
34°
5
86°
50°
6
73°
52°
7
64°
43°
8
61°
35°
9
55°
33°
10
70°
47°
11
63°
44°
12
61°
38°
13
55°
37°
14
57°
46°
15
58°
48°
16
79°
47°
17
85°
54°
18
72°
53°
19
95°
51°
20
89°
66°
21
67°
48°
22
68°
38°
23
64°
42°
24
54°
48°
25
77°
50°
26
84°
61°
27
83°
54°
28
70°
48°
29
66°
47°
30
61°
44°
31
67°
47°
1
65°
46°
2
66°
47°
3
68°
52°
4
73°
56°
5
79°
57°
6
76°
56°
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 61° to 84°, with overnight lows between 44° and 61°. The average high for May is 72° 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.
