S
M
T
W
T
F
S
26
70°
53°
27
71°
53°
28
70°
52°
29
70°
52°
30
71°
55°
31
74°
54°
1
74°
55°
2
75°
60°
3
74°
61°
4
75°
60°
5
77°
56°
6
76°
54°
7
70°
54°
8
72°
55°
9
73°
56°
10
77°
60°
11
78°
61°
12
78°
61°
13
77°
57°
14
77°
57°
15
76°
53°
16
70°
53°
17
72°
54°
18
72°
56°
19
71°
60°
20
70°
62°
21
79°
62°
22
78°
59°
23
76°
54°
24
71°
53°
25
69°
53°
26
73°
51°
27
70°
55°
28
Hist. Avg.
71°
56°
29
Hist. Avg.
71°
56°
30
Hist. Avg.
71°
56°
31
Hist. Avg.
70°
56°
1
Hist. Avg.
70°
55°
2
Hist. Avg.
70°
55°
3
Hist. Avg.
70°
55°
4
Hist. Avg.
70°
55°
5
Hist. Avg.
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Copper Harbor
Copper Harbor's August 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 51° and 62°. The average high for August is 74° with an average low of 56°. 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 Copper Harbor. See also: September | October | November.
