S
M
T
W
T
F
S
26
52°
34°
27
48°
33°
28
41°
33°
29
60°
35°
30
62°
42°
1
64°
43°
2
70°
47°
3
73°
54°
4
69°
49°
5
65°
45°
6
57°
41°
7
55°
37°
8
49°
39°
9
65°
39°
10
53°
40°
11
66°
40°
12
70°
46°
13
51°
35°
14
43°
34°
15
37°
32°
16
36°
30°
17
39°
30°
18
52°
35°
19
53°
42°
20
61°
44°
21
73°
47°
22
70°
46°
23
67°
48°
24
58°
39°
25
48°
36°
26
53°
37°
27
54°
38°
28
54°
38°
29
55°
38°
30
57°
43°
31
62°
44°
1
58°
40°
2
64°
45°
3
64°
45°
4
63°
44°
5
62°
41°
6
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Snoqualmie Valley
Snoqualmie Valley's May 2026 forecast shows daily high temperatures ranging from 48° to 73°, with overnight lows between 36° and 48°. The average high for May is 60° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Snoqualmie Valley. See also: June | July | August.
