S
M
T
W
T
F
S
26
70°
58°
27
72°
56°
28
73°
56°
29
76°
55°
30
75°
56°
31
74°
55°
1
74°
55°
2
72°
56°
3
74°
56°
4
77°
58°
5
70°
53°
6
79°
61°
7
78°
60°
8
75°
59°
9
72°
60°
10
72°
60°
11
77°
59°
12
78°
60°
13
79°
61°
14
78°
61°
15
78°
60°
16
77°
60°
17
75°
56°
18
69°
54°
19
73°
55°
20
74°
56°
21
73°
56°
22
68°
57°
23
69°
54°
24
76°
59°
25
77°
59°
26
76°
58°
27
76°
59°
28
75°
59°
29
75°
58°
30
74°
59°
31
75°
59°
1
76°
58°
2
75°
59°
3
76°
58°
4
75°
58°
5
75°
53°
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 68° to 79°, with overnight lows between 53° and 61°. The average high for August is 75° with an average low of 58°. 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.