S
M
T
W
T
F
S
26
60°
46°
27
62°
44°
28
61°
42°
29
62°
46°
30
63°
47°
1
63°
45°
2
65°
45°
3
63°
43°
4
62°
42°
5
62°
42°
6
64°
43°
7
65°
47°
8
69°
48°
9
67°
49°
10
66°
46°
11
66°
44°
12
63°
45°
13
63°
44°
14
64°
45°
15
66°
45°
16
67°
46°
17
68°
49°
18
68°
48°
19
69°
47°
20
68°
47°
21
69°
51°
22
69°
51°
23
71°
57°
24
75°
58°
25
79°
57°
26
78°
56°
27
78°
59°
28
80°
58°
29
82°
57°
30
82°
52°
31
73°
52°
1
72°
53°
2
74°
52°
3
76°
59°
4
81°
60°
5
80°
60°
6
75°
59°
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 60° to 82°, with overnight lows between 42° and 60°. The average high for May is 69° with an average low of 50°. 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.
