S
M
T
W
T
F
S
30
87°
65°
31
83°
65°
1
81°
66°
2
81°
68°
3
82°
69°
4
81°
64°
5
86°
65°
6
81°
64°
7
80°
63°
8
79°
64°
9
79°
63°
10
81°
68°
11
83°
69°
12
79°
68°
13
82°
68°
14
84°
68°
15
Hist. Avg.
79°
57°
16
Hist. Avg.
79°
57°
17
Hist. Avg.
78°
56°
18
Hist. Avg.
78°
56°
19
Hist. Avg.
78°
56°
20
Hist. Avg.
77°
55°
21
Hist. Avg.
77°
55°
22
Hist. Avg.
77°
54°
23
Hist. Avg.
76°
54°
24
Hist. Avg.
76°
54°
25
Hist. Avg.
76°
53°
26
Hist. Avg.
75°
53°
27
Hist. Avg.
75°
52°
28
Hist. Avg.
75°
52°
29
Hist. Avg.
74°
51°
30
Hist. Avg.
74°
51°
1
Hist. Avg.
74°
51°
2
Hist. Avg.
73°
50°
3
Hist. Avg.
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lewes
Lewes's September 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 63° and 69°. The average high for September is 82° with an average low of 66°. 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 Lewes. See also: October | November | December.
