S
M
T
W
T
F
S
30
74°
58°
31
73°
59°
1
74°
58°
2
76°
54°
3
70°
51°
4
70°
53°
5
71°
55°
6
73°
57°
7
78°
57°
8
78°
54°
9
69°
52°
10
70°
56°
11
68°
45°
12
67°
48°
13
66°
47°
14
68°
45°
15
66°
44°
16
65°
43°
17
66°
44°
18
66°
42°
19
65°
40°
20
63°
40°
21
64°
41°
22
65°
43°
23
68°
46°
24
71°
50°
25
74°
51°
26
74°
50°
27
69°
46°
28
72°
49°
29
64°
39°
30
63°
48°
1
61°
50°
2
71°
36°
3
72°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marlette
Marlette's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 36° and 59°. The average high for September is 69° with an average low of 48°. 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 Marlette. See also: October | November | December.