S
M
T
W
T
F
S
30
81°
60°
31
82°
60°
1
82°
61°
2
83°
60°
3
82°
53°
4
77°
50°
5
73°
52°
6
74°
58°
7
79°
58°
8
81°
57°
9
80°
58°
10
74°
57°
11
79°
56°
12
79°
57°
13
78°
57°
14
77°
56°
15
79°
56°
16
78°
48°
17
74°
55°
18
76°
51°
19
72°
48°
20
71°
46°
21
67°
44°
22
66°
51°
23
67°
48°
24
67°
45°
25
65°
44°
26
65°
43°
27
66°
49°
28
72°
50°
29
73°
47°
30
67°
45°
1
64°
48°
2
64°
41°
3
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mayfair
Mayfair's September 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 41° and 61°. The average high for September is 74° with an average low of 52°. 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 Mayfair. See also: October | November | December.