S
M
T
W
T
F
S
26
87°
68°
27
88°
67°
28
87°
68°
29
87°
68°
30
88°
69°
31
88°
68°
1
86°
67°
2
81°
65°
3
81°
63°
4
79°
65°
5
79°
64°
6
80°
62°
7
80°
64°
8
82°
66°
9
84°
67°
10
86°
67°
11
86°
66°
12
84°
66°
13
85°
65°
14
86°
65°
15
83°
67°
16
80°
66°
17
83°
65°
18
86°
67°
19
85°
65°
20
83°
59°
21
83°
58°
22
79°
57°
23
79°
58°
24
80°
59°
25
79°
58°
26
79°
63°
27
80°
59°
28
79°
58°
29
78°
58°
30
78°
56°
31
76°
56°
1
76°
57°
2
77°
58°
3
75°
61°
4
76°
56°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Catalina
Catalina's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 56° and 69°. The average high for August is 82° with an average low of 63°. 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 Catalina. See also: September | October | November.
