S
M
T
W
T
F
S
30
82°
49°
31
73°
49°
1
73°
56°
2
74°
54°
3
75°
49°
4
77°
57°
5
81°
50°
6
80°
47°
7
72°
47°
8
71°
44°
9
71°
47°
10
75°
51°
11
75°
45°
12
69°
45°
13
70°
44°
14
73°
51°
15
75°
49°
16
76°
43°
17
71°
41°
18
67°
41°
19
67°
42°
20
68°
47°
21
65°
47°
22
65°
43°
23
66°
46°
24
66°
41°
25
69°
49°
26
72°
49°
27
72°
39°
28
69°
39°
29
64°
47°
30
67°
47°
1
63°
48°
2
64°
45°
3
63°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mayport
Mayport's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 38° and 57°. The average high for September is 71° with an average low of 46°. 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 Mayport. See also: October | November | December.
