S
M
T
W
T
F
S
29
67°
45°
30
77°
59°
31
85°
54°
1
85°
61°
2
87°
57°
3
87°
59°
4
86°
59°
5
72°
45°
6
72°
43°
7
75°
46°
8
75°
50°
9
76°
54°
10
81°
55°
11
86°
58°
12
85°
61°
13
85°
58°
14
86°
59°
15
84°
58°
16
83°
59°
17
82°
48°
18
78°
56°
19
77°
55°
20
79°
56°
21
79°
57°
22
78°
56°
23
79°
56°
24
79°
55°
25
80°
55°
26
80°
57°
27
79°
56°
28
77°
54°
29
77°
54°
30
73°
56°
1
74°
55°
2
73°
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 72° to 86°, with overnight lows between 43° and 61°. The average high for April is 79° with an average low of 55°. 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.