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
72°
55°
15
70°
58°
16
71°
59°
17
69°
58°
18
77°
59°
19
86°
55°
20
86°
60°
21
79°
59°
22
73°
60°
23
74°
60°
24
71°
58°
25
71°
54°
26
68°
57°
27
67°
55°
28
69°
53°
29
70°
56°
30
75°
56°
31
81°
60°
1
80°
58°
2
79°
61°
3
79°
60°
4
78°
61°
5
78°
63°
6
75°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Whittier
South Whittier's May 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 58° and 63°. The average high for May is 79° with an average low of 61°. 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 South Whittier. See also: June | July | August.