S
M
T
W
T
F
S
26
90°
66°
27
86°
64°
28
88°
61°
29
90°
61°
30
91°
66°
1
90°
66°
2
93°
64°
3
72°
68°
4
81°
64°
5
84°
63°
6
91°
61°
7
93°
63°
8
93°
63°
9
95°
70°
10
93°
70°
11
91°
70°
12
88°
72°
13
93°
72°
14
90°
70°
15
90°
68°
16
91°
70°
17
90°
72°
18
91°
72°
19
91°
71°
20
89°
72°
21
91°
70°
22
93°
71°
23
92°
73°
24
93°
71°
25
94°
73°
26
90°
70°
27
91°
71°
28
90°
70°
29
90°
70°
30
91°
69°
31
90°
70°
1
90°
72°
2
89°
72°
3
91°
71°
4
92°
72°
5
92°
73°
6
91°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Bay
South Bay's May 2026 forecast shows daily high temperatures ranging from 89° to 94°, with overnight lows between 69° and 73°. The average high for May is 91° with an average low of 71°. 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 Bay. See also: June | July | August.
