S
M
T
W
T
F
S
30
82°
69°
31
78°
71°
1
80°
68°
2
74°
67°
3
88°
69°
4
86°
75°
5
80°
70°
6
77°
66°
7
79°
66°
8
80°
67°
9
84°
71°
10
87°
72°
11
80°
70°
12
79°
66°
13
82°
69°
14
78°
64°
15
73°
60°
16
79°
65°
17
85°
73°
18
81°
69°
19
71°
64°
20
72°
65°
21
71°
63°
22
69°
59°
23
70°
56°
24
67°
56°
25
71°
58°
26
67°
58°
27
64°
59°
28
65°
60°
29
71°
63°
30
74°
64°
1
79°
66°
2
76°
64°
3
72°
62°
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 64° to 79°, with overnight lows between 56° and 66°. The average high for September is 71° with an average low of 61°. 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.