S
M
T
W
T
F
S
26
84°
74°
27
94°
76°
28
92°
73°
29
87°
75°
30
84°
76°
1
85°
77°
2
84°
73°
3
82°
69°
4
87°
71°
5
90°
73°
6
87°
74°
7
86°
75°
8
90°
78°
9
90°
78°
10
90°
79°
11
92°
80°
12
89°
76°
13
86°
77°
14
88°
77°
15
94°
76°
16
90°
80°
17
93°
78°
18
96°
78°
19
91°
74°
20
91°
75°
21
91°
75°
22
90°
76°
23
89°
76°
24
90°
74°
25
90°
75°
26
89°
74°
27
90°
76°
28
89°
74°
29
88°
74°
30
87°
75°
31
88°
74°
1
86°
73°
2
86°
76°
3
87°
75°
4
87°
76°
5
88°
76°
6
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Pasadena
South Pasadena's May 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 73° and 76°. The average high for May is 89° with an average low of 75°. 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 Pasadena. See also: June | July | August.