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
78°
58°
3
72°
58°
4
71°
57°
5
71°
57°
6
76°
59°
7
80°
61°
8
80°
61°
9
78°
60°
10
79°
59°
11
80°
61°
12
79°
60°
13
78°
60°
14
77°
61°
15
76°
57°
16
77°
59°
17
79°
61°
18
80°
62°
19
80°
62°
20
79°
61°
21
80°
62°
22
80°
62°
23
81°
63°
24
81°
63°
25
80°
62°
26
79°
62°
27
79°
61°
28
73°
60°
29
72°
59°
30
72°
59°
31
73°
61°
1
74°
63°
2
77°
62°
3
76°
62°
4
76°
61°
5
75°
60°
6
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Whittier
Whittier's May 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 57° 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 Whittier. See also: June | July | August.