S
M
T
W
T
F
S
30
62°
49°
31
63°
50°
1
65°
51°
2
68°
55°
3
67°
54°
4
62°
54°
5
62°
51°
6
63°
53°
7
61°
52°
8
62°
53°
9
64°
53°
10
64°
54°
11
63°
56°
12
66°
56°
13
68°
50°
14
65°
48°
15
62°
50°
16
62°
52°
17
64°
54°
18
68°
55°
19
69°
53°
20
69°
49°
21
68°
47°
22
64°
46°
23
61°
47°
24
62°
46°
25
61°
45°
26
60°
47°
27
60°
51°
28
62°
52°
29
67°
46°
30
61°
51°
1
65°
50°
2
Hist. Avg.
63°
48°
3
Hist. Avg.
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bayside
Bayside's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 45° and 56°. The average high for September is 64° with an average low of 51°. 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 Bayside. See also: October | November | December.