S
M
T
W
T
F
S
26
58°
41°
27
62°
40°
28
63°
41°
29
58°
42°
30
58°
45°
1
59°
42°
2
59°
48°
3
58°
45°
4
59°
46°
5
59°
45°
6
61°
44°
7
67°
47°
8
64°
50°
9
59°
47°
10
60°
43°
11
60°
44°
12
66°
47°
13
66°
44°
14
60°
45°
15
60°
46°
16
61°
44°
17
65°
49°
18
61°
52°
19
62°
50°
20
62°
46°
21
64°
54°
22
72°
52°
23
72°
46°
24
63°
49°
25
62°
55°
26
61°
48°
27
66°
53°
28
72°
47°
29
63°
54°
30
71°
59°
31
76°
50°
1
65°
46°
2
67°
52°
3
68°
49°
4
64°
51°
5
65°
48°
6
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Renton
Renton's May 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 40° and 59°. The average high for May is 63° with an average low of 47°. 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 Renton. See also: June | July | August.
