S
M
T
W
T
F
S
26
71°
36°
27
57°
44°
28
61°
48°
29
72°
38°
30
80°
42°
1
75°
46°
2
72°
51°
3
91°
48°
4
74°
56°
5
65°
56°
6
68°
55°
7
71°
51°
8
69°
49°
9
79°
45°
10
70°
52°
11
81°
49°
12
83°
59°
13
64°
53°
14
64°
50°
15
59°
44°
16
55°
45°
17
64°
44°
18
72°
45°
19
70°
48°
20
69°
53°
21
84°
46°
22
82°
49°
23
74°
53°
24
78°
46°
25
67°
49°
26
64°
50°
27
74°
52°
28
80°
54°
29
63°
49°
30
66°
45°
31
72°
48°
1
84°
55°
2
87°
57°
3
82°
54°
4
79°
53°
5
77°
52°
6
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Happy Valley
Happy Valley's May 2026 forecast shows daily high temperatures ranging from 63° to 87°, with overnight lows between 45° and 57°. The average high for May is 75° with an average low of 52°. 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.
