S
M
T
W
T
F
S
30
81°
66°
31
83°
68°
1
86°
69°
2
86°
69°
3
85°
66°
4
85°
62°
5
80°
62°
6
80°
65°
7
82°
67°
8
83°
66°
9
84°
67°
10
80°
66°
11
84°
65°
12
84°
67°
13
83°
66°
14
83°
66°
15
84°
65°
16
84°
66°
17
83°
66°
18
83°
62°
19
82°
59°
20
80°
57°
21
75°
57°
22
75°
63°
23
77°
60°
24
81°
56°
25
74°
56°
26
75°
57°
27
74°
56°
28
79°
59°
29
78°
60°
30
78°
60°
1
79°
61°
2
78°
59°
3
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Onancock
Onancock's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 56° and 69°. The average high for September is 81° with an average low of 63°. 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 Onancock. See also: October | November | December.
