S
M
T
W
T
F
S
26
67°
26°
27
74°
29°
28
67°
30°
29
66°
30°
30
51°
41°
1
54°
36°
2
50°
34°
3
49°
34°
4
60°
44°
5
66°
52°
6
59°
41°
7
55°
33°
8
49°
30°
9
51°
34°
10
55°
37°
11
60°
35°
12
61°
36°
13
60°
38°
14
59°
39°
15
64°
38°
16
62°
36°
17
61°
36°
18
63°
44°
19
63°
44°
20
67°
43°
21
71°
45°
22
70°
42°
23
62°
40°
24
63°
43°
25
64°
39°
26
65°
39°
27
65°
42°
28
63°
43°
29
65°
47°
30
69°
45°
31
69°
41°
1
66°
40°
2
65°
40°
3
66°
41°
4
65°
42°
5
66°
41°
6
67°
44°
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 49° to 71°, with overnight lows between 30° and 52°. The average high for May is 62° with an average low of 40°. 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.
