S
M
T
W
T
F
S
28
71°
59°
29
73°
61°
30
71°
60°
1
72°
59°
2
77°
59°
3
84°
60°
4
86°
63°
5
85°
63°
6
88°
62°
7
88°
63°
8
89°
64°
9
88°
63°
10
84°
63°
11
86°
64°
12
82°
66°
13
87°
66°
14
93°
72°
15
97°
70°
16
95°
68°
17
88°
65°
18
87°
64°
19
90°
69°
20
92°
70°
21
93°
73°
22
94°
72°
23
95°
72°
24
95°
71°
25
96°
72°
26
92°
71°
27
93°
68°
28
93°
70°
29
92°
68°
30
90°
68°
31
89°
68°
1
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Altadena
Altadena's July 2026 forecast shows daily high temperatures ranging from 87° to 97°, with overnight lows between 64° and 73°. The average high for July is 92° 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 July weather will actually feel in Altadena. See also: August | September | October.
