S
M
T
W
T
F
S
30
84°
65°
31
85°
65°
1
81°
66°
2
81°
66°
3
82°
69°
4
84°
67°
5
85°
65°
6
82°
66°
7
80°
64°
8
81°
65°
9
80°
64°
10
81°
65°
11
82°
67°
12
83°
66°
13
Hist. Avg.
82°
68°
14
Hist. Avg.
82°
67°
15
Hist. Avg.
82°
67°
16
Hist. Avg.
81°
67°
17
Hist. Avg.
81°
66°
18
Hist. Avg.
81°
66°
19
Hist. Avg.
81°
66°
20
Hist. Avg.
80°
66°
21
Hist. Avg.
80°
65°
22
Hist. Avg.
80°
65°
23
Hist. Avg.
80°
64°
24
Hist. Avg.
79°
64°
25
Hist. Avg.
79°
64°
26
Hist. Avg.
79°
63°
27
Hist. Avg.
78°
63°
28
Hist. Avg.
78°
63°
29
Hist. Avg.
78°
62°
30
Hist. Avg.
78°
62°
1
Hist. Avg.
77°
61°
2
Hist. Avg.
77°
61°
3
Hist. Avg.
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chesapeake
Chesapeake's September 2026 forecast shows daily high temperatures ranging from 80° to 85°, with overnight lows between 64° 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 Chesapeake. See also: October | November | December.