S
M
T
W
T
F
S
28
80°
68°
29
89°
66°
30
92°
68°
1
99°
73°
2
102°
77°
3
100°
75°
4
94°
74°
5
88°
73°
6
82°
70°
7
83°
69°
8
83°
66°
9
89°
68°
10
88°
70°
11
85°
67°
12
83°
65°
13
83°
67°
14
84°
68°
15
85°
67°
16
87°
65°
17
83°
63°
18
84°
65°
19
87°
68°
20
88°
68°
21
81°
67°
22
83°
68°
23
86°
68°
24
85°
67°
25
85°
68°
26
87°
68°
27
88°
67°
28
87°
68°
29
87°
68°
30
88°
69°
31
88°
68°
1
86°
67°
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 81° to 100°, with overnight lows between 63° and 75°. The average high for July is 86° with an average low of 68°. 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.