S
M
T
W
T
F
S
26
86°
62°
27
85°
60°
28
83°
62°
29
87°
66°
30
81°
66°
1
69°
56°
2
71°
50°
3
77°
44°
4
82°
46°
5
82°
48°
6
88°
64°
7
77°
69°
8
76°
64°
9
70°
64°
10
83°
66°
11
87°
65°
12
71°
62°
13
82°
60°
14
84°
57°
15
84°
51°
16
89°
54°
17
89°
68°
18
88°
67°
19
90°
69°
20
89°
70°
21
89°
69°
22
87°
69°
23
89°
71°
24
85°
71°
25
82°
71°
26
82°
71°
27
81°
69°
28
85°
68°
29
81°
69°
30
82°
66°
31
83°
65°
1
84°
65°
2
85°
65°
3
84°
66°
4
86°
68°
5
89°
67°
6
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bethlehem
Bethlehem's May 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 65° and 71°. The average high for May is 84° with an average low of 68°. 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 Bethlehem. See also: June | July | August.
