S
M
T
W
T
F
S
30
74°
61°
31
N/A
1
86°
66°
2
79°
55°
3
81°
54°
4
82°
56°
5
78°
57°
6
76°
54°
7
74°
52°
8
75°
53°
9
77°
53°
10
71°
50°
11
72°
47°
12
76°
54°
13
76°
54°
14
68°
52°
15
74°
51°
16
75°
51°
17
71°
50°
18
69°
51°
19
73°
52°
20
73°
51°
21
72°
52°
22
74°
52°
23
74°
51°
24
73°
50°
25
72°
51°
26
73°
49°
27
72°
50°
28
72°
48°
29
70°
47°
30
69°
48°
1
69°
48°
2
70°
47°
3
69°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grayling
Grayling's September 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 47° and 66°. 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 Grayling. See also: October | November | December.