S
M
T
W
T
F
S
26
63°
31°
27
70°
36°
28
61°
46°
29
50°
39°
30
52°
35°
1
46°
33°
2
45°
32°
3
51°
46°
4
56°
47°
5
52°
40°
6
48°
38°
7
47°
36°
8
46°
38°
9
48°
40°
10
54°
40°
11
52°
41°
12
54°
44°
13
56°
44°
14
55°
40°
15
58°
39°
16
59°
42°
17
59°
44°
18
60°
48°
19
63°
48°
20
68°
47°
21
67°
49°
22
65°
45°
23
61°
47°
24
65°
42°
25
60°
42°
26
62°
49°
27
62°
49°
28
70°
50°
29
65°
48°
30
63°
44°
31
63°
42°
1
62°
43°
2
62°
43°
3
64°
44°
4
63°
44°
5
64°
49°
6
64°
49°
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 45° to 70°, with overnight lows between 32° and 50°. The average high for May is 58° with an average low of 43°. 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.