S
M
T
W
T
F
S
26
75°
52°
27
74°
51°
28
77°
54°
29
78°
55°
30
77°
54°
1
78°
55°
2
77°
56°
3
77°
56°
4
79°
57°
5
79°
57°
6
80°
56°
7
80°
57°
8
79°
57°
9
80°
58°
10
82°
57°
11
76°
55°
12
75°
54°
13
79°
57°
14
81°
58°
15
83°
57°
16
79°
56°
17
74°
55°
18
74°
56°
19
75°
55°
20
79°
55°
21
81°
58°
22
81°
57°
23
80°
58°
24
82°
59°
25
82°
59°
26
81°
58°
27
82°
59°
28
83°
58°
29
78°
56°
30
78°
58°
31
81°
59°
1
83°
58°
2
82°
57°
3
80°
58°
4
82°
57°
5
78°
58°
6
80°
60°
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 74° to 83°, with overnight lows between 51° and 60°. The average high for May is 79° 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 Bethlehem. See also: June | July | August.
