S
M
T
W
T
F
S
26
81°
63°
27
80°
64°
28
78°
61°
29
77°
60°
30
79°
63°
31
78°
61°
1
78°
61°
2
79°
63°
3
84°
64°
4
85°
64°
5
84°
63°
6
83°
66°
7
85°
66°
8
84°
65°
9
85°
64°
10
84°
65°
11
85°
66°
12
85°
66°
13
84°
65°
14
85°
65°
15
84°
64°
16
84°
63°
17
81°
62°
18
80°
61°
19
79°
62°
20
78°
61°
21
77°
61°
22
78°
62°
23
79°
62°
24
79°
66°
25
81°
67°
26
84°
65°
27
82°
65°
28
83°
66°
29
83°
65°
30
82°
66°
31
82°
65°
1
80°
65°
2
81°
64°
3
82°
64°
4
82°
65°
5
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Catalina Island Golf Course
Catalina Island Golf Course's August 2026 forecast shows daily high temperatures ranging from 77° to 85°, with overnight lows between 60° and 67°. The average high for August is 82° with an average low of 64°. 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 Island Golf Course. See also: September | October | November.