S
M
T
W
T
F
S
28
104°
77°
29
102°
73°
30
100°
75°
1
102°
64°
2
104°
70°
3
102°
70°
4
99°
77°
5
104°
79°
6
108°
79°
7
109°
81°
8
108°
84°
9
109°
82°
10
106°
84°
11
104°
81°
12
102°
75°
13
100°
75°
14
100°
77°
15
102°
79°
16
93°
77°
17
91°
77°
18
94°
76°
19
99°
84°
20
99°
75°
21
93°
75°
22
98°
76°
23
105°
78°
24
107°
78°
25
108°
77°
26
99°
76°
27
96°
72°
28
96°
72°
29
99°
73°
30
103°
76°
31
103°
75°
1
106°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Catalina
Catalina's July 2026 forecast shows daily high temperatures ranging from 96° to 108°, with overnight lows between 72° and 78°. The average high for July is 102° with an average low of 75°. 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 Catalina. See also: August | September | October.