S
M
T
W
T
F
S
26
56°
45°
27
57°
44°
28
57°
41°
29
61°
47°
30
62°
46°
1
61°
49°
2
65°
46°
3
58°
43°
4
58°
44°
5
60°
45°
6
65°
44°
7
58°
42°
8
58°
46°
9
59°
49°
10
61°
48°
11
59°
43°
12
59°
47°
13
60°
44°
14
59°
44°
15
60°
44°
16
63°
50°
17
68°
51°
18
69°
52°
19
70°
48°
20
62°
49°
21
62°
46°
22
65°
54°
23
71°
51°
24
63°
48°
25
61°
47°
26
61°
48°
27
62°
45°
28
64°
52°
29
71°
56°
30
72°
57°
31
73°
57°
1
74°
55°
2
74°
53°
3
71°
54°
4
69°
54°
5
64°
52°
6
71°
50°
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 56° to 74°, with overnight lows between 41° and 57°. The average high for May is 64° with an average low of 48°. 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.