S
M
T
W
T
F
S
30
69°
48°
31
68°
49°
1
70°
50°
2
72°
53°
3
72°
53°
4
71°
48°
5
68°
47°
6
66°
50°
7
69°
51°
8
71°
48°
9
71°
53°
10
70°
52°
11
71°
52°
12
71°
50°
13
69°
46°
14
65°
49°
15
64°
50°
16
65°
52°
17
66°
52°
18
69°
51°
19
68°
51°
20
67°
52°
21
69°
47°
22
67°
45°
23
63°
44°
24
62°
45°
25
63°
46°
26
64°
45°
27
63°
46°
28
61°
50°
29
64°
49°
30
64°
48°
1
65°
49°
2
66°
48°
3
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Swaffham
Swaffham's September 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 43° and 53°. The average high for September is 67° with an average low of 49°. 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 Swaffham. See also: October | November | December.