S
M
T
W
T
F
S
30
98°
63°
31
97°
63°
1
96°
62°
2
95°
64°
3
96°
62°
4
96°
60°
5
95°
54°
6
91°
52°
7
87°
54°
8
87°
55°
9
90°
59°
10
93°
59°
11
94°
55°
12
94°
56°
13
92°
56°
14
93°
53°
15
90°
53°
16
86°
54°
17
87°
58°
18
91°
54°
19
93°
56°
20
92°
54°
21
88°
54°
22
84°
55°
23
82°
51°
24
84°
53°
25
84°
49°
26
85°
50°
27
83°
49°
28
82°
48°
29
82°
47°
30
81°
49°
1
80°
58°
2
87°
56°
3
90°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Le Grand
Le Grand's September 2026 forecast shows daily high temperatures ranging from 80° to 98°, with overnight lows between 47° and 64°. The average high for September is 89° with an average low of 55°. 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 Le Grand. See also: October | November | December.