S
M
T
W
T
F
S
26
71°
59°
27
80°
58°
28
73°
56°
29
75°
48°
30
78°
48°
31
84°
49°
1
65°
56°
2
71°
51°
3
76°
45°
4
78°
49°
5
85°
49°
6
85°
52°
7
86°
53°
8
83°
54°
9
75°
52°
10
75°
50°
11
75°
54°
12
73°
53°
13
77°
55°
14
80°
54°
15
78°
57°
16
76°
58°
17
74°
57°
18
75°
58°
19
73°
57°
20
76°
57°
21
76°
58°
22
78°
56°
23
76°
57°
24
75°
54°
25
80°
58°
26
78°
57°
27
78°
58°
28
77°
55°
29
75°
56°
30
72°
55°
31
74°
56°
1
74°
57°
2
69°
55°
3
74°
56°
4
78°
56°
5
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lake Stevens
Lake Stevens's August 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 53° and 58°. The average high for August is 76° 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 Lake Stevens. See also: September | October | November.