S
M
T
W
T
F
S
29
59°
24°
30
68°
49°
31
71°
56°
1
56°
43°
2
69°
42°
3
74°
49°
4
79°
57°
5
67°
35°
6
44°
30°
7
41°
21°
8
55°
32°
9
68°
43°
10
74°
43°
11
60°
37°
12
69°
51°
13
72°
54°
14
73°
54°
15
68°
44°
16
59°
39°
17
63°
44°
18
68°
44°
19
63°
40°
20
64°
34°
21
66°
42°
22
68°
43°
23
69°
42°
24
67°
38°
25
58°
33°
26
57°
37°
27
57°
33°
28
58°
37°
29
58°
32°
30
57°
32°
1
61°
34°
2
60°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Bethlehem
Bethlehem's April 2026 forecast shows daily high temperatures ranging from 41° to 74°, with overnight lows between 21° and 54°. The average high for April is 63° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Bethlehem. See also: May | June | July.