S
M
T
W
T
F
S
26
84°
59°
27
88°
63°
28
79°
64°
29
82°
61°
30
70°
57°
1
64°
54°
2
72°
50°
3
73°
43°
4
79°
54°
5
78°
66°
6
78°
61°
7
70°
50°
8
72°
50°
9
78°
55°
10
79°
60°
11
76°
47°
12
72°
45°
13
81°
56°
14
80°
53°
15
80°
56°
16
84°
57°
17
81°
56°
18
78°
59°
19
80°
60°
20
77°
61°
21
79°
55°
22
77°
53°
23
76°
53°
24
76°
54°
25
78°
56°
26
78°
54°
27
77°
54°
28
78°
55°
29
79°
59°
30
80°
61°
31
81°
63°
1
81°
63°
2
80°
62°
3
81°
60°
4
81°
62°
5
82°
64°
6
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Beaverton
Beaverton's May 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 45° and 66°. The average high for May is 79° with an average low of 57°. 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 Beaverton. See also: June | July | August.