S
M
T
W
T
F
S
30
75°
54°
31
76°
53°
1
66°
60°
2
66°
62°
3
74°
56°
4
72°
50°
5
67°
49°
6
71°
51°
7
70°
52°
8
69°
51°
9
71°
56°
10
72°
55°
11
72°
48°
12
72°
51°
13
74°
53°
14
66°
48°
15
66°
49°
16
70°
52°
17
71°
47°
18
64°
44°
19
64°
42°
20
71°
51°
21
72°
52°
22
73°
53°
23
73°
50°
24
71°
49°
25
71°
48°
26
72°
49°
27
71°
50°
28
72°
47°
29
67°
43°
30
59°
39°
1
59°
40°
2
64°
47°
3
68°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chestertown
Chestertown's September 2026 forecast shows daily high temperatures ranging from 59° to 74°, with overnight lows between 39° and 62°. The average high for September is 69° with an average low of 50°. 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 Chestertown. See also: October | November | December.
