S
M
T
W
T
F
S
26
69°
53°
27
70°
53°
28
69°
55°
29
72°
61°
30
79°
61°
31
81°
60°
1
79°
56°
2
76°
59°
3
76°
61°
4
77°
61°
5
78°
60°
6
79°
58°
7
78°
57°
8
78°
51°
9
72°
52°
10
70°
52°
11
75°
54°
12
72°
51°
13
70°
51°
14
73°
59°
15
78°
60°
16
81°
62°
17
80°
55°
18
77°
52°
19
77°
52°
20
75°
54°
21
71°
61°
22
78°
56°
23
80°
53°
24
78°
54°
25
77°
58°
26
77°
58°
27
68°
56°
28
65°
50°
29
68°
52°
30
66°
52°
31
65°
50°
1
65°
51°
2
Hist. Avg.
71°
54°
3
Hist. Avg.
71°
54°
4
Hist. Avg.
71°
54°
5
Hist. Avg.
70°
54°
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 65° to 81°, with overnight lows between 50° and 62°. The average high for August is 74° 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 Snohomish. See also: September | October | November.