S
M
T
W
T
F
S
30
75°
61°
31
73°
57°
1
72°
54°
2
70°
57°
3
75°
66°
4
70°
57°
5
68°
52°
6
77°
52°
7
75°
61°
8
63°
55°
9
64°
52°
10
70°
55°
11
66°
57°
12
72°
55°
13
70°
59°
14
71°
63°
15
71°
53°
16
66°
54°
17
64°
50°
18
66°
58°
19
70°
53°
20
67°
52°
21
70°
59°
22
69°
58°
23
69°
57°
24
66°
55°
25
65°
55°
26
66°
54°
27
64°
54°
28
65°
55°
29
65°
54°
30
64°
53°
1
64°
53°
2
63°
54°
3
64°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lowestoft
Lowestoft's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 50° and 63°. The average high for September is 66° with an average low of 55°. 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 Lowestoft. See also: October | November | December.
