S
M
T
W
T
F
S
26
58°
39°
27
58°
34°
28
60°
39°
29
59°
34°
30
58°
34°
1
61°
36°
2
60°
36°
3
61°
35°
4
65°
41°
5
69°
44°
6
69°
42°
7
72°
47°
8
73°
48°
9
74°
48°
10
73°
44°
11
63°
41°
12
62°
39°
13
65°
45°
14
64°
46°
15
64°
44°
16
65°
47°
17
63°
45°
18
70°
41°
19
70°
40°
20
68°
41°
21
67°
40°
22
66°
40°
23
67°
43°
24
68°
45°
25
68°
47°
26
69°
52°
27
74°
44°
28
69°
48°
29
70°
54°
30
79°
44°
31
71°
47°
1
70°
50°
2
72°
45°
3
73°
47°
4
74°
53°
5
80°
47°
6
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Bethlehem
New Bethlehem's May 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 34° and 54°. The average high for May is 67° with an average low of 43°. 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 New Bethlehem. See also: June | July | August.