S
M
T
W
T
F
S
26
82°
62°
27
73°
53°
28
71°
46°
29
85°
60°
30
80°
64°
1
70°
61°
2
62°
53°
3
74°
44°
4
80°
43°
5
84°
48°
6
89°
54°
7
79°
64°
8
74°
55°
9
76°
59°
10
87°
61°
11
87°
61°
12
73°
55°
13
80°
55°
14
83°
53°
15
80°
47°
16
87°
51°
17
91°
67°
18
90°
62°
19
90°
60°
20
93°
62°
21
93°
64°
22
90°
68°
23
84°
69°
24
87°
68°
25
89°
70°
26
89°
71°
27
88°
69°
28
86°
70°
29
83°
67°
30
79°
67°
31
78°
66°
1
77°
58°
2
80°
60°
3
77°
59°
4
79°
61°
5
77°
64°
6
80°
62°
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 77° to 88°, with overnight lows between 58° and 70°. The average high for May is 80° with an average low of 64°. 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.