S
M
T
W
T
F
S
26
58°
37°
27
65°
40°
28
62°
50°
29
50°
40°
30
54°
39°
1
50°
32°
2
47°
31°
3
58°
32°
4
73°
49°
5
63°
47°
6
49°
39°
7
54°
39°
8
55°
37°
9
62°
42°
10
58°
41°
11
55°
38°
12
55°
36°
13
60°
42°
14
52°
43°
15
69°
41°
16
70°
48°
17
80°
54°
18
88°
55°
19
N/A
20
58°
36°
21
58°
39°
22
61°
46°
23
54°
46°
24
60°
50°
25
67°
51°
26
72°
52°
27
70°
53°
28
71°
53°
29
70°
52°
30
69°
56°
31
70°
55°
1
72°
54°
2
73°
48°
3
73°
53°
4
72°
54°
5
73°
53°
6
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Happy Valley
Happy Valley's May 2026 forecast shows daily high temperatures ranging from 54° to 73°, with overnight lows between 36° and 56°. The average high for May is 67° with an average low of 50°. 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 Happy Valley. See also: June | July | August.
