S
M
T
W
T
F
S
26
63°
60°
27
72°
54°
28
66°
54°
29
75°
53°
30
73°
48°
31
76°
50°
1
67°
56°
2
70°
52°
3
76°
47°
4
79°
51°
5
81°
54°
6
81°
53°
7
69°
54°
8
75°
52°
9
72°
49°
10
65°
54°
11
71°
55°
12
74°
53°
13
75°
54°
14
73°
54°
15
70°
54°
16
65°
52°
17
65°
53°
18
66°
53°
19
67°
54°
20
65°
52°
21
67°
53°
22
67°
54°
23
66°
53°
24
70°
50°
25
74°
54°
26
73°
54°
27
72°
53°
28
71°
53°
29
70°
52°
30
67°
53°
31
68°
53°
1
68°
54°
2
65°
53°
3
69°
53°
4
72°
52°
5
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sequim
Sequim's August 2026 forecast shows daily high temperatures ranging from 65° to 75°, with overnight lows between 50° and 55°. The average high for August is 69° with an average low of 53°. 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 Sequim. See also: September | October | November.