S
M
T
W
T
F
S
29
57°
23°
30
71°
36°
31
80°
55°
1
77°
50°
2
50°
40°
3
61°
40°
4
79°
43°
5
56°
42°
6
54°
38°
7
50°
29°
8
52°
24°
9
60°
27°
10
72°
41°
11
63°
42°
12
65°
34°
13
80°
50°
14
84°
55°
15
86°
59°
16
89°
64°
17
78°
56°
18
78°
53°
19
59°
35°
20
48°
28°
21
55°
41°
22
68°
45°
23
69°
42°
24
68°
43°
25
65°
42°
26
60°
46°
27
62°
44°
28
61°
42°
29
62°
46°
30
63°
47°
1
63°
45°
2
65°
45°
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 48° to 89°, with overnight lows between 28° and 64°. The average high for April is 65° with an average low of 45°. 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.