S
M
T
W
T
F
S
29
55°
22°
30
71°
38°
31
78°
58°
1
79°
46°
2
47°
40°
3
62°
40°
4
74°
43°
5
56°
42°
6
53°
38°
7
50°
29°
8
53°
25°
9
59°
26°
10
72°
36°
11
60°
41°
12
63°
33°
13
79°
47°
14
84°
58°
15
83°
63°
16
89°
60°
17
76°
54°
18
72°
54°
19
62°
36°
20
52°
31°
21
56°
33°
22
60°
44°
23
63°
41°
24
64°
45°
25
65°
44°
26
64°
45°
27
60°
40°
28
58°
41°
29
59°
38°
30
63°
37°
1
58°
36°
2
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Hackettstown
Hackettstown's April 2026 forecast shows daily high temperatures ranging from 52° to 89°, with overnight lows between 31° and 63°. The average high for April is 66° with an average low of 44°. 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 Hackettstown. See also: May | June | July.
