S
M
T
W
T
F
S
30
90°
69°
31
93°
71°
1
96°
70°
2
97°
71°
3
98°
73°
4
95°
71°
5
100°
70°
6
99°
70°
7
N/A
8
89°
67°
9
90°
70°
10
87°
71°
11
87°
69°
12
87°
68°
13
87°
69°
14
86°
68°
15
89°
69°
16
88°
68°
17
82°
67°
18
83°
64°
19
82°
63°
20
83°
63°
21
79°
62°
22
86°
66°
23
86°
66°
24
85°
65°
25
85°
66°
26
84°
66°
27
86°
65°
28
85°
66°
29
84°
66°
30
84°
64°
1
83°
64°
2
83°
62°
3
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Griffin
Griffin's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 60° and 71°. The average high for September is 85° with an average low of 66°. 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.