S
M
T
W
T
F
S
26
68°
50°
27
64°
47°
28
64°
48°
29
65°
45°
30
64°
44°
1
66°
48°
2
67°
46°
3
66°
45°
4
67°
49°
5
75°
55°
6
76°
55°
7
73°
54°
8
77°
57°
9
78°
58°
10
78°
56°
11
73°
49°
12
66°
50°
13
68°
54°
14
69°
52°
15
69°
53°
16
70°
54°
17
68°
53°
18
80°
51°
19
72°
51°
20
75°
52°
21
73°
51°
22
72°
50°
23
73°
52°
24
73°
52°
25
72°
54°
26
73°
56°
27
75°
54°
28
76°
56°
29
76°
63°
30
83°
56°
31
84°
55°
1
76°
61°
2
81°
59°
3
84°
56°
4
78°
60°
5
84°
57°
6
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pasadena
Pasadena's May 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 44° and 63°. The average high for May is 73° with an average low of 53°. 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 Pasadena. See also: June | July | August.