S
M
T
W
T
F
S
30
86°
73°
31
90°
72°
1
93°
76°
2
88°
77°
3
92°
76°
4
92°
76°
5
85°
74°
6
82°
72°
7
81°
70°
8
82°
65°
9
85°
64°
10
93°
71°
11
84°
75°
12
87°
75°
13
85°
76°
14
83°
73°
15
77°
67°
16
79°
63°
17
87°
65°
18
86°
72°
19
81°
71°
20
89°
70°
21
82°
74°
22
81°
71°
23
71°
67°
24
68°
64°
25
70°
61°
26
67°
59°
27
74°
59°
28
76°
61°
29
75°
67°
30
80°
66°
1
88°
63°
2
90°
69°
3
79°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chesapeake
Chesapeake's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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. See also: October | November | December.