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
73°
52°
20
80°
60°
21
87°
54°
22
68°
50°
23
67°
48°
24
79°
53°
25
73°
49°
26
67°
45°
27
67°
46°
28
69°
47°
29
67°
45°
30
65°
44°
31
60°
43°
1
61°
44°
2
66°
46°
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 60° to 87°, with overnight lows between 43° and 60°. The average high for August is 69° with an average low of 48°. 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.
