S
M
T
W
T
F
S
26
106°
86°
27
106°
86°
28
100°
75°
29
106°
86°
30
108°
84°
31
108°
84°
1
108°
82°
2
109°
80°
3
107°
79°
4
103°
76°
5
100°
76°
6
100°
72°
7
99°
71°
8
99°
70°
9
97°
69°
10
95°
71°
11
94°
70°
12
92°
69°
13
94°
68°
14
98°
69°
15
92°
66°
16
93°
67°
17
93°
66°
18
92°
65°
19
93°
66°
20
95°
67°
21
95°
68°
22
98°
70°
23
100°
71°
24
100°
68°
25
95°
69°
26
94°
67°
27
93°
67°
28
96°
68°
29
94°
65°
30
93°
67°
31
98°
69°
1
100°
70°
2
99°
67°
3
93°
65°
4
92°
63°
5
92°
64°
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 92° to 109°, with overnight lows between 63° and 82°. The average high for August is 97° 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 August weather will actually feel in Catalina. See also: September | October | November.
