S
M
T
W
T
F
S
26
48°
38°
27
60°
38°
28
49°
34°
29
65°
34°
30
61°
40°
1
65°
33°
2
74°
33°
3
78°
43°
4
82°
39°
5
49°
41°
6
53°
40°
7
77°
37°
8
78°
49°
9
81°
41°
10
73°
47°
11
88°
50°
12
83°
52°
13
85°
41°
14
88°
56°
15
95°
47°
16
87°
53°
17
75°
52°
18
53°
42°
19
65°
37°
20
61°
45°
21
65°
43°
22
69°
50°
23
78°
47°
24
92°
53°
25
95°
57°
26
89°
58°
27
80°
60°
28
80°
61°
29
81°
62°
30
79°
59°
31
77°
55°
1
79°
53°
2
79°
52°
3
78°
53°
4
77°
54°
5
87°
59°
6
90°
61°
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 77° to 90°, with overnight lows between 52° and 62°. The average high for May is 81° 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.