S
M
T
W
T
F
S
30
85°
66°
31
88°
74°
1
91°
73°
2
84°
69°
3
89°
68°
4
87°
70°
5
83°
65°
6
81°
60°
7
80°
58°
8
81°
63°
9
84°
70°
10
90°
70°
11
81°
62°
12
83°
67°
13
85°
69°
14
86°
68°
15
85°
69°
16
85°
62°
17
81°
65°
18
82°
63°
19
79°
62°
20
78°
61°
21
82°
65°
22
80°
64°
23
75°
65°
24
75°
64°
25
76°
64°
26
80°
63°
27
80°
63°
28
78°
62°
29
80°
63°
30
80°
63°
1
79°
62°
2
78°
62°
3
78°
61°
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 75° to 90°, with overnight lows between 58° and 70°. The average high for September is 81° with an average low of 64°. 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.
