S
M
T
W
T
F
S
30
68°
51°
31
71°
52°
1
68°
53°
2
69°
56°
3
68°
55°
4
68°
55°
5
70°
56°
6
70°
55°
7
71°
54°
8
68°
50°
9
65°
50°
10
66°
54°
11
66°
49°
12
68°
48°
13
63°
51°
14
65°
53°
15
67°
54°
16
68°
47°
17
68°
46°
18
62°
46°
19
60°
48°
20
60°
49°
21
63°
51°
22
63°
49°
23
62°
47°
24
62°
50°
25
63°
50°
26
65°
51°
27
65°
48°
28
66°
42°
29
63°
42°
30
56°
47°
1
58°
50°
2
62°
48°
3
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yarmouth Bar
Yarmouth Bar's September 2026 forecast shows daily high temperatures ranging from 56° to 71°, with overnight lows between 42° and 56°. The average high for September is 65° with an average low of 50°. 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 Yarmouth Bar. See also: October | November | December.
