S
M
T
W
T
F
S
30
69°
54°
31
72°
55°
1
74°
54°
2
74°
53°
3
73°
53°
4
73°
52°
5
74°
51°
6
71°
52°
7
72°
49°
8
70°
50°
9
70°
50°
10
69°
51°
11
69°
52°
12
71°
50°
13
69°
52°
14
67°
45°
15
66°
47°
16
Hist. Avg.
65°
49°
17
Hist. Avg.
64°
49°
18
Hist. Avg.
64°
49°
19
Hist. Avg.
64°
48°
20
Hist. Avg.
64°
48°
21
Hist. Avg.
63°
48°
22
Hist. Avg.
63°
48°
23
Hist. Avg.
63°
48°
24
Hist. Avg.
63°
48°
25
Hist. Avg.
63°
48°
26
Hist. Avg.
62°
48°
27
Hist. Avg.
62°
48°
28
Hist. Avg.
62°
47°
29
Hist. Avg.
62°
47°
30
Hist. Avg.
61°
47°
1
Hist. Avg.
61°
47°
2
Hist. Avg.
61°
47°
3
Hist. Avg.
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in King's Lynn
King's Lynn's September 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 45° and 55°. The average high for September is 71° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in King's Lynn. See also: October | November | December.
