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
85°
59°
2
78°
69°
3
74°
58°
4
79°
56°
5
86°
68°
6
83°
69°
7
80°
66°
8
81°
64°
9
84°
67°
10
81°
64°
11
78°
63°
12
77°
59°
13
77°
58°
14
78°
58°
15
79°
62°
16
76°
50°
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 50° and 69°. 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.