S
M
T
W
T
F
S
26
74°
59°
27
79°
59°
28
73°
58°
29
75°
56°
30
79°
54°
31
84°
56°
1
72°
58°
2
71°
56°
3
76°
53°
4
81°
58°
5
87°
59°
6
88°
59°
7
86°
59°
8
83°
58°
9
77°
55°
10
74°
55°
11
79°
55°
12
79°
58°
13
82°
59°
14
86°
56°
15
84°
58°
16
85°
59°
17
83°
56°
18
74°
53°
19
74°
54°
20
77°
53°
21
76°
54°
22
78°
57°
23
80°
56°
24
82°
57°
25
80°
55°
26
75°
52°
27
79°
56°
28
70°
50°
29
70°
48°
30
72°
48°
31
76°
51°
1
77°
52°
2
77°
52°
3
76°
53°
4
77°
54°
5
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Snoqualmie
Snoqualmie's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 48° and 59°. The average high for August is 78° with an average low of 54°. 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. See also: September | October | November.