S
M
T
W
T
F
S
26
81°
61°
27
75°
55°
28
68°
50°
29
84°
59°
30
79°
61°
1
70°
54°
2
66°
52°
3
73°
45°
4
81°
43°
5
82°
52°
6
90°
61°
7
79°
61°
8
75°
54°
9
73°
57°
10
86°
59°
11
84°
59°
12
72°
55°
13
82°
57°
14
81°
57°
15
79°
46°
16
86°
52°
17
91°
70°
18
90°
63°
19
90°
64°
20
92°
65°
21
90°
68°
22
87°
68°
23
87°
67°
24
87°
66°
25
87°
67°
26
86°
66°
27
85°
65°
28
85°
65°
29
83°
65°
30
84°
63°
31
85°
62°
1
84°
63°
2
89°
67°
3
86°
66°
4
83°
67°
5
83°
67°
6
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harlem
Harlem's May 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 62° and 68°. The average high for May is 86° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Harlem. See also: June | July | August.