S
M
T
W
T
F
S
29
36°
23°
30
29°
16°
31
33°
8°
1
46°
22°
2
41°
29°
3
45°
29°
4
59°
33°
5
53°
30°
6
55°
36°
7
66°
29°
8
39°
23°
9
42°
28°
10
47°
29°
11
52°
30°
12
58°
33°
13
64°
35°
14
66°
36°
15
59°
30°
16
58°
31°
17
62°
35°
18
65°
37°
19
66°
37°
20
63°
36°
21
55°
32°
22
53°
28°
23
53°
30°
24
55°
30°
25
54°
26°
26
55°
31°
27
56°
31°
28
56°
29°
29
61°
34°
30
65°
35°
1
68°
40°
2
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harlem
Harlem's April 2026 forecast shows daily high temperatures ranging from 39° to 68°, with overnight lows between 23° and 40°. The average high for April is 57° with an average low of 32°. 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 Harlem. See also: May | June | July.