S
M
T
W
T
F
S
29
69°
58°
30
82°
54°
31
82°
58°
1
83°
59°
2
83°
60°
3
85°
61°
4
83°
64°
5
76°
64°
6
64°
56°
7
79°
50°
8
74°
55°
9
78°
53°
10
81°
54°
11
86°
54°
12
88°
56°
13
87°
57°
14
85°
58°
15
84°
60°
16
85°
57°
17
86°
58°
18
88°
59°
19
88°
61°
20
89°
62°
21
81°
54°
22
83°
60°
23
82°
59°
24
84°
61°
25
84°
61°
26
83°
60°
27
84°
59°
28
85°
61°
29
85°
61°
30
84°
60°
1
83°
61°
2
83°
62°
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 74° to 89°, with overnight lows between 53° and 62°. The average high for April is 84° with an average low of 59°. 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.