S
M
T
W
T
F
S
26
65°
48°
27
68°
48°
28
63°
49°
29
70°
47°
30
67°
49°
31
80°
49°
1
58°
45°
2
54°
43°
3
68°
42°
4
76°
49°
5
81°
59°
6
80°
59°
7
77°
57°
8
73°
53°
9
69°
49°
10
67°
46°
11
68°
47°
12
62°
48°
13
71°
50°
14
72°
53°
15
66°
53°
16
67°
52°
17
74°
51°
18
72°
52°
19
75°
52°
20
82°
57°
21
81°
54°
22
68°
50°
23
67°
51°
24
72°
50°
25
71°
46°
26
66°
45°
27
64°
46°
28
67°
46°
29
65°
45°
30
65°
46°
31
67°
47°
1
66°
46°
2
70°
51°
3
71°
52°
4
66°
47°
5
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Snoqualmie Valley
Snoqualmie Valley's August 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 45° and 57°. The average high for August is 69° with an average low of 49°. 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 Snoqualmie Valley. See also: September | October | November.
