S
M
T
W
T
F
S
30
84°
67°
31
86°
69°
1
88°
69°
2
89°
68°
3
88°
69°
4
87°
64°
5
84°
64°
6
83°
64°
7
84°
66°
8
84°
68°
9
85°
67°
10
85°
67°
11
86°
66°
12
87°
67°
13
87°
67°
14
86°
66°
15
87°
67°
16
86°
67°
17
86°
66°
18
85°
65°
19
85°
64°
20
84°
60°
21
82°
64°
22
79°
64°
23
79°
62°
24
84°
58°
25
81°
58°
26
78°
62°
27
80°
60°
28
79°
61°
29
82°
60°
30
82°
61°
1
81°
59°
2
81°
60°
3
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grifton
Grifton's September 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 58° and 69°. The average high for September is 84° with an average low of 64°. 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 Grifton. See also: October | November | December.