S
M
T
W
T
F
S
26
90°
76°
27
92°
75°
28
90°
74°
29
91°
75°
30
92°
74°
31
91°
75°
1
90°
76°
2
91°
75°
3
92°
76°
4
91°
76°
5
92°
75°
6
91°
75°
7
90°
76°
8
91°
77°
9
92°
76°
10
92°
75°
11
91°
76°
12
92°
76°
13
92°
75°
14
91°
75°
15
91°
76°
16
93°
75°
17
90°
76°
18
90°
76°
19
91°
77°
20
92°
76°
21
93°
75°
22
93°
76°
23
92°
76°
24
94°
75°
25
93°
77°
26
94°
77°
27
93°
76°
28
91°
77°
29
93°
76°
30
93°
76°
31
92°
75°
1
92°
76°
2
91°
76°
3
92°
75°
4
92°
76°
5
91°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cape Sable
Cape Sable's August 2026 forecast shows daily high temperatures ranging from 90° to 94°, with overnight lows between 74° and 77°. The average high for August is 92° with an average low of 76°. 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 Cape Sable. See also: September | October | November.