S
M
T
W
T
F
S
26
61°
50°
27
61°
44°
28
64°
41°
29
69°
46°
30
68°
53°
1
63°
51°
2
57°
52°
3
63°
49°
4
78°
51°
5
83°
59°
6
79°
62°
7
72°
50°
8
64°
47°
9
78°
51°
10
80°
59°
11
68°
45°
12
70°
45°
13
74°
48°
14
67°
57°
15
70°
50°
16
83°
50°
17
86°
65°
18
93°
71°
19
93°
71°
20
92°
70°
21
85°
60°
22
63°
57°
23
74°
59°
24
74°
60°
25
83°
68°
26
79°
69°
27
87°
69°
28
82°
61°
29
75°
61°
30
79°
57°
31
72°
61°
1
75°
60°
2
68°
54°
3
74°
56°
4
78°
59°
5
83°
64°
6
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lynnwood
Lynnwood's May 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 54° and 67°. The average high for May is 77° with an average low of 60°. 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 Lynnwood. See also: June | July | August.