S
M
T
W
T
F
S
29
63°
28°
30
71°
49°
31
78°
55°
1
84°
58°
2
82°
58°
3
83°
61°
4
81°
64°
5
72°
45°
6
68°
45°
7
69°
40°
8
66°
42°
9
70°
48°
10
77°
49°
11
75°
50°
12
72°
52°
13
73°
53°
14
76°
47°
15
74°
53°
16
75°
52°
17
74°
51°
18
66°
52°
19
70°
52°
20
74°
53°
21
75°
54°
22
77°
54°
23
77°
56°
24
78°
56°
25
78°
55°
26
79°
56°
27
78°
51°
28
68°
49°
29
76°
56°
30
78°
55°
1
71°
53°
2
70°
52°
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 66° to 84°, with overnight lows between 40° and 64°. The average high for April is 75° with an average low of 52°. 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.