S
M
T
W
T
F
S
26
95°
78°
27
97°
79°
28
97°
78°
29
96°
80°
30
98°
79°
31
97°
80°
1
96°
81°
2
99°
81°
3
96°
80°
4
95°
80°
5
93°
77°
6
94°
78°
7
96°
79°
8
96°
79°
9
95°
78°
10
95°
79°
11
94°
79°
12
95°
78°
13
95°
79°
14
96°
79°
15
95°
78°
16
95°
79°
17
94°
79°
18
95°
78°
19
94°
78°
20
95°
79°
21
93°
78°
22
94°
76°
23
92°
74°
24
91°
74°
25
88°
75°
26
88°
76°
27
89°
76°
28
87°
75°
29
88°
76°
30
89°
76°
31
86°
75°
1
88°
75°
2
88°
74°
3
89°
74°
4
88°
72°
5
89°
73°
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 99°, with overnight lows between 72° and 81°. The average high for August is 93° with an average low of 77°. 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.