S
M
T
W
T
F
S
26
93°
68°
27
92°
67°
28
90°
65°
29
89°
65°
30
91°
66°
31
95°
69°
1
95°
69°
2
93°
68°
3
92°
67°
4
89°
66°
5
86°
66°
6
91°
68°
7
94°
68°
8
94°
69°
9
95°
70°
10
93°
68°
11
90°
68°
12
87°
65°
13
84°
66°
14
83°
64°
15
85°
65°
16
88°
65°
17
91°
68°
18
94°
68°
19
98°
68°
20
93°
70°
21
95°
70°
22
97°
71°
23
97°
71°
24
98°
74°
25
99°
73°
26
102°
71°
27
101°
70°
28
100°
71°
29
99°
70°
30
98°
68°
31
96°
67°
1
95°
68°
2
96°
68°
3
92°
63°
4
90°
63°
5
93°
66°
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 90° to 102°, with overnight lows between 63° and 74°. The average high for August is 97° with an average low of 69°. 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.