S
M
T
W
T
F
S
26
81°
64°
27
81°
62°
28
78°
67°
29
69°
65°
30
81°
64°
31
81°
60°
1
86°
68°
2
77°
66°
3
78°
56°
4
83°
58°
5
84°
68°
6
83°
66°
7
82°
64°
8
80°
66°
9
79°
64°
10
79°
59°
11
78°
60°
12
75°
57°
13
77°
58°
14
78°
65°
15
73°
56°
16
73°
54°
17
80°
60°
18
72°
57°
19
73°
60°
20
75°
55°
21
73°
54°
22
74°
60°
23
79°
61°
24
75°
60°
25
75°
59°
26
78°
60°
27
78°
59°
28
75°
60°
29
78°
58°
30
77°
59°
31
79°
57°
1
74°
54°
2
70°
53°
3
70°
51°
4
71°
52°
5
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sackets Harbor
Sackets Harbor's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 51° and 68°. The average high for August is 77° with an average low of 59°. 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 Sackets Harbor. See also: September | October | November.