S
M
T
W
T
F
S
30
88°
64°
31
88°
63°
1
91°
58°
2
86°
63°
3
84°
68°
4
84°
64°
5
84°
64°
6
81°
63°
7
81°
64°
8
81°
63°
9
81°
55°
10
79°
48°
11
84°
59°
12
73°
52°
13
70°
43°
14
61°
56°
15
71°
48°
16
70°
50°
17
71°
54°
18
72°
61°
19
74°
60°
20
76°
56°
21
73°
55°
22
76°
58°
23
74°
60°
24
75°
61°
25
78°
59°
26
72°
50°
27
76°
58°
28
68°
56°
29
71°
55°
30
72°
51°
1
72°
54°
2
69°
53°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bayport
Bayport's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 43° and 61°. The average high for September is 72° with an average low of 55°. 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 Bayport. See also: October | November | December.