S
M
T
W
T
F
S
26
71°
41°
27
58°
41°
28
63°
45°
29
71°
40°
30
82°
46°
1
76°
50°
2
72°
48°
3
90°
51°
4
75°
53°
5
65°
53°
6
70°
54°
7
71°
48°
8
70°
48°
9
78°
50°
10
70°
49°
11
78°
49°
12
83°
53°
13
75°
52°
14
79°
52°
15
71°
51°
16
70°
50°
17
72°
53°
18
73°
51°
19
68°
52°
20
70°
50°
21
65°
52°
22
65°
46°
23
67°
49°
24
72°
50°
25
71°
51°
26
65°
46°
27
65°
47°
28
69°
52°
29
68°
55°
30
71°
54°
31
75°
56°
1
76°
56°
2
75°
52°
3
66°
48°
4
74°
52°
5
75°
49°
6
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Beaverton-Hillsboro
Beaverton-Hillsboro's May 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 46° and 56°. The average high for May is 71° with an average low of 51°. 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-Hillsboro. See also: June | July | August.
