S
M
T
W
T
F
S
30
85°
61°
31
84°
60°
1
89°
65°
2
91°
66°
3
89°
63°
4
85°
64°
5
88°
59°
6
86°
58°
7
86°
63°
8
90°
65°
9
89°
64°
10
88°
65°
11
90°
64°
12
88°
63°
13
88°
62°
14
87°
62°
15
88°
63°
16
89°
63°
17
84°
62°
18
82°
59°
19
79°
56°
20
78°
57°
21
77°
54°
22
79°
52°
23
76°
54°
24
76°
59°
25
83°
57°
26
83°
58°
27
75°
59°
28
82°
57°
29
76°
57°
30
73°
48°
1
73°
46°
2
72°
44°
3
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Griffin
Griffin's September 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 44° and 66°. The average high for September is 83° with an average low of 59°. 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 Griffin. See also: October | November | December.