S
M
T
W
T
F
S
30
88°
66°
31
85°
62°
1
83°
58°
2
86°
64°
3
88°
69°
4
84°
66°
5
85°
64°
6
76°
66°
7
82°
64°
8
84°
63°
9
77°
55°
10
80°
49°
11
85°
62°
12
72°
51°
13
69°
46°
14
61°
44°
15
70°
48°
16
74°
45°
17
72°
56°
18
61°
58°
19
60°
56°
20
64°
53°
21
60°
49°
22
64°
43°
23
71°
45°
24
64°
54°
25
68°
58°
26
62°
55°
27
66°
53°
28
70°
59°
29
67°
56°
30
69°
49°
1
71°
50°
2
68°
49°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mayer
Mayer's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 43° and 59°. The average high for September is 67° 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 Mayer. See also: October | November | December.