S
M
T
W
T
F
S
30
75°
58°
31
77°
52°
1
78°
51°
2
74°
50°
3
73°
54°
4
76°
59°
5
80°
55°
6
80°
50°
7
72°
50°
8
72°
51°
9
75°
56°
10
72°
55°
11
73°
56°
12
70°
55°
13
71°
49°
14
70°
47°
15
68°
46°
16
69°
51°
17
69°
53°
18
75°
54°
19
76°
55°
20
77°
53°
21
74°
48°
22
73°
52°
23
67°
45°
24
73°
44°
25
65°
44°
26
66°
45°
27
73°
52°
28
65°
52°
29
72°
50°
30
Hist. Avg.
69°
48°
1
Hist. Avg.
68°
47°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
68°
46°
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 65° to 80°, with overnight lows between 44° and 59°. The average high for September is 73° with an average low of 51°. 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.
