S
M
T
W
T
F
S
30
96°
70°
31
98°
72°
1
97°
72°
2
96°
72°
3
98°
72°
4
98°
74°
5
99°
72°
6
100°
72°
7
99°
71°
8
99°
73°
9
96°
71°
10
95°
73°
11
93°
73°
12
95°
74°
13
95°
72°
14
94°
71°
15
91°
67°
16
92°
70°
17
90°
70°
18
90°
66°
19
87°
64°
20
90°
68°
21
91°
69°
22
91°
69°
23
90°
68°
24
90°
68°
25
89°
67°
26
88°
67°
27
89°
66°
28
88°
66°
29
87°
65°
30
87°
65°
1
82°
57°
2
76°
56°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grambling
Grambling's September 2026 forecast shows daily high temperatures ranging from 76° to 100°, with overnight lows between 54° and 74°. The average high for September is 90° with an average low of 68°. 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 Grambling. See also: October | November | December.