S
M
T
W
T
F
S
30
85°
60°
31
85°
70°
1
91°
72°
2
85°
72°
3
92°
73°
4
87°
64°
5
82°
60°
6
79°
58°
7
80°
61°
8
79°
60°
9
83°
63°
10
81°
63°
11
83°
58°
12
77°
58°
13
76°
59°
14
81°
62°
15
76°
62°
16
76°
61°
17
75°
56°
18
74°
53°
19
73°
53°
20
73°
57°
21
78°
60°
22
81°
61°
23
82°
61°
24
81°
59°
25
79°
57°
26
78°
58°
27
79°
59°
28
79°
58°
29
80°
57°
30
74°
54°
1
70°
51°
2
72°
56°
3
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chesapeake City
Chesapeake City's September 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 51° and 73°. The average high for September is 79° with an average low of 60°. 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 Chesapeake City. See also: October | November | December.