S
M
T
W
T
F
S
29
81°
59°
30
82°
61°
31
82°
63°
1
80°
59°
2
80°
59°
3
83°
64°
4
83°
58°
5
83°
58°
6
79°
57°
7
80°
56°
8
73°
56°
9
77°
61°
10
79°
61°
11
81°
59°
12
81°
56°
13
83°
52°
14
77°
54°
15
80°
51°
16
80°
53°
17
76°
43°
18
78°
40°
19
74°
41°
20
79°
39°
21
81°
44°
22
82°
49°
23
81°
49°
24
79°
51°
25
76°
51°
26
79°
51°
27
81°
52°
28
83°
51°
29
77°
58°
30
69°
47°
1
67°
50°
2
71°
56°
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 67° to 71°, with overnight lows between 47° and 56°. The average high for April is 69° with an average low of 51°. 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.