S
M
T
W
T
F
S
26
64°
53°
27
65°
54°
28
72°
52°
29
73°
53°
30
73°
55°
1
75°
57°
2
73°
55°
3
68°
57°
4
68°
55°
5
67°
54°
6
73°
54°
7
76°
55°
8
75°
59°
9
79°
60°
10
78°
59°
11
82°
57°
12
69°
56°
13
73°
57°
14
N/A
15
75°
59°
16
72°
57°
17
77°
59°
18
80°
59°
19
82°
60°
20
83°
60°
21
76°
61°
22
75°
59°
23
74°
61°
24
73°
59°
25
74°
60°
26
76°
61°
27
80°
63°
28
77°
59°
29
73°
55°
30
76°
56°
31
79°
60°
1
81°
62°
2
81°
63°
3
82°
63°
4
80°
58°
5
74°
58°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Hacienda Heights
Hacienda Heights's May 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 55° and 63°. The average high for May is 77° with an average low of 60°. 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 Hacienda Heights. See also: June | July | August.