S
M
T
W
T
F
S
26
75°
57°
27
74°
59°
28
77°
59°
29
75°
58°
30
76°
59°
31
81°
61°
1
81°
59°
2
76°
60°
3
80°
60°
4
75°
59°
5
78°
60°
6
81°
59°
7
76°
57°
8
73°
56°
9
73°
58°
10
79°
58°
11
74°
59°
12
73°
59°
13
79°
58°
14
80°
58°
15
73°
57°
16
73°
57°
17
76°
57°
18
78°
57°
19
79°
55°
20
80°
56°
21
79°
51°
22
72°
48°
23
71°
47°
24
74°
52°
25
77°
50°
26
78°
46°
27
72°
54°
28
76°
55°
29
78°
54°
30
78°
54°
31
77°
53°
1
77°
52°
2
76°
45°
3
71°
44°
4
68°
52°
5
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Keweenaw Bay
Keweenaw Bay's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 44° and 61°. The average high for August is 76° with an average low of 55°. 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 Keweenaw Bay. See also: September | October | November.
