S
M
T
W
T
F
S
30
97°
60°
31
98°
58°
1
97°
57°
2
94°
57°
3
93°
60°
4
94°
60°
5
96°
62°
6
95°
57°
7
89°
55°
8
89°
57°
9
90°
57°
10
90°
53°
11
88°
53°
12
88°
52°
13
87°
52°
14
87°
50°
15
86°
52°
16
86°
53°
17
87°
52°
18
88°
51°
19
86°
54°
20
90°
55°
21
92°
54°
22
92°
54°
23
85°
56°
24
92°
58°
25
93°
54°
26
Hist. Avg.
87°
54°
27
Hist. Avg.
86°
54°
28
Hist. Avg.
86°
54°
29
Hist. Avg.
86°
53°
30
Hist. Avg.
85°
53°
1
Hist. Avg.
85°
53°
2
Hist. Avg.
85°
53°
3
Hist. Avg.
84°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in La Grange
La Grange's September 2026 forecast shows daily high temperatures ranging from 85° to 98°, with overnight lows between 50° and 62°. The average high for September is 91° 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 La Grange. See also: October | November | December.
