S
M
T
W
T
F
S
26
76°
60°
27
76°
60°
28
77°
59°
29
76°
58°
30
77°
59°
31
78°
60°
1
77°
59°
2
76°
59°
3
77°
57°
4
69°
55°
5
69°
55°
6
70°
53°
7
71°
56°
8
77°
58°
9
77°
58°
10
76°
57°
11
75°
56°
12
72°
54°
13
71°
55°
14
67°
49°
15
68°
52°
16
71°
59°
17
77°
60°
18
78°
59°
19
79°
58°
20
77°
50°
21
73°
58°
22
77°
59°
23
78°
54°
24
68°
50°
25
69°
51°
26
70°
52°
27
72°
50°
28
70°
52°
29
70°
51°
30
66°
50°
31
71°
55°
1
74°
58°
2
76°
58°
3
75°
57°
4
66°
48°
5
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Snohomish
Snohomish's August 2026 forecast shows daily high temperatures ranging from 66° to 79°, with overnight lows between 48° and 60°. The average high for August is 73° with an average low of 55°. 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 Snohomish. See also: September | October | November.
