S
M
T
W
T
F
S
26
62°
45°
27
61°
44°
28
56°
44°
29
54°
47°
30
60°
50°
31
61°
50°
1
63°
45°
2
63°
50°
3
62°
51°
4
64°
51°
5
63°
45°
6
59°
47°
7
57°
45°
8
63°
43°
9
56°
46°
10
58°
45°
11
60°
51°
12
56°
51°
13
59°
47°
14
60°
47°
15
57°
46°
16
Hist. Avg.
68°
48°
17
Hist. Avg.
68°
47°
18
Hist. Avg.
67°
47°
19
Hist. Avg.
67°
47°
20
Hist. Avg.
67°
47°
21
Hist. Avg.
67°
47°
22
Hist. Avg.
67°
47°
23
Hist. Avg.
66°
47°
24
Hist. Avg.
66°
46°
25
Hist. Avg.
66°
46°
26
Hist. Avg.
66°
46°
27
Hist. Avg.
65°
46°
28
Hist. Avg.
65°
46°
29
Hist. Avg.
65°
45°
30
Hist. Avg.
64°
45°
31
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
45°
2
Hist. Avg.
63°
44°
3
Hist. Avg.
63°
44°
4
Hist. Avg.
63°
44°
5
Hist. Avg.
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in William's Harbour
William's Harbour's August 2026 forecast shows daily high temperatures ranging from 54° to 64°, with overnight lows between 43° and 51°. The average high for August is 60° with an average low of 47°. 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 William's Harbour. See also: September | October | November.
