S
M
T
W
T
F
S
26
70°
59°
27
78°
58°
28
71°
57°
29
71°
54°
30
74°
53°
31
79°
56°
1
66°
54°
2
67°
53°
3
72°
57°
4
80°
59°
5
82°
58°
6
79°
57°
7
79°
58°
8
77°
57°
9
76°
56°
10
76°
58°
11
76°
58°
12
75°
57°
13
74°
58°
14
81°
60°
15
76°
57°
16
71°
56°
17
74°
58°
18
75°
58°
19
76°
56°
20
73°
55°
21
70°
57°
22
68°
54°
23
72°
58°
24
68°
51°
25
72°
56°
26
76°
59°
27
76°
59°
28
74°
58°
29
69°
57°
30
67°
51°
31
70°
56°
1
66°
54°
2
66°
51°
3
67°
50°
4
69°
55°
5
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mukilteo
Mukilteo's August 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 50° and 60°. The average high for August is 73° 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 Mukilteo. See also: September | October | November.