S
M
T
W
T
F
S
26
64°
42°
27
63°
44°
28
64°
44°
29
57°
39°
30
58°
42°
1
58°
40°
2
59°
39°
3
58°
38°
4
59°
41°
5
58°
40°
6
59°
39°
7
62°
40°
8
65°
41°
9
69°
45°
10
70°
48°
11
68°
46°
12
62°
43°
13
63°
43°
14
62°
42°
15
62°
42°
16
61°
43°
17
62°
41°
18
67°
43°
19
67°
43°
20
62°
48°
21
63°
46°
22
63°
50°
23
62°
45°
24
62°
44°
25
63°
43°
26
63°
43°
27
66°
46°
28
68°
48°
29
68°
47°
30
72°
44°
31
68°
52°
1
66°
44°
2
65°
44°
3
71°
45°
4
69°
45°
5
74°
49°
6
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bellevue
Bellevue's May 2026 forecast shows daily high temperatures ranging from 57° to 75°, with overnight lows between 38° and 53°. The average high for May is 64° with an average low of 44°. 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 Bellevue. See also: June | July | August.