S
M
T
W
T
F
S
26
92°
67°
27
92°
66°
28
91°
66°
29
92°
65°
30
93°
67°
31
92°
67°
1
91°
65°
2
92°
66°
3
92°
66°
4
91°
65°
5
92°
66°
6
92°
66°
7
91°
67°
8
93°
67°
9
92°
66°
10
93°
66°
11
92°
63°
12
87°
60°
13
86°
60°
14
87°
61°
15
91°
65°
16
92°
66°
17
91°
60°
18
89°
60°
19
90°
65°
20
89°
66°
21
93°
65°
22
92°
64°
23
92°
63°
24
93°
62°
25
90°
61°
26
90°
61°
27
91°
60°
28
90°
60°
29
90°
61°
30
91°
61°
31
90°
60°
1
90°
59°
2
89°
60°
3
88°
60°
4
88°
61°
5
89°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pasadena
Pasadena's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 59° and 67°. The average high for August is 91° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Pasadena. See also: September | October | November.