S
M
T
W
T
F
S
26
66°
36°
27
68°
45°
28
57°
45°
29
63°
46°
30
68°
46°
1
75°
50°
2
72°
50°
3
65°
51°
4
58°
39°
5
58°
43°
6
54°
38°
7
58°
43°
8
58°
44°
9
62°
46°
10
59°
42°
11
60°
45°
12
59°
47°
13
60°
45°
14
61°
44°
15
60°
45°
16
60°
47°
17
61°
44°
18
60°
44°
19
60°
47°
20
61°
43°
21
60°
42°
22
60°
45°
23
61°
46°
24
63°
49°
25
64°
49°
26
64°
48°
27
65°
48°
28
63°
44°
29
62°
43°
30
62°
45°
31
67°
47°
1
67°
48°
2
66°
49°
3
66°
47°
4
63°
49°
5
64°
48°
6
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in King's Lynn
King's Lynn's May 2026 forecast shows daily high temperatures ranging from 54° to 67°, with overnight lows between 38° and 51°. The average high for May is 62° with an average low of 46°. 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 King's Lynn. See also: June | July | August.