S
M
T
W
T
F
S
30
72°
64°
31
82°
66°
1
80°
62°
2
77°
50°
3
83°
64°
4
70°
61°
5
73°
63°
6
82°
64°
7
80°
67°
8
84°
64°
9
72°
57°
10
81°
56°
11
79°
59°
12
63°
42°
13
65°
41°
14
57°
47°
15
65°
39°
16
65°
46°
17
66°
50°
18
69°
49°
19
67°
47°
20
65°
48°
21
66°
47°
22
66°
51°
23
65°
49°
24
68°
48°
25
63°
43°
26
68°
49°
27
68°
51°
28
58°
48°
29
64°
48°
30
64°
46°
1
65°
47°
2
61°
47°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Laporte
Laporte's September 2026 forecast shows daily high temperatures ranging from 57° to 69°, with overnight lows between 39° and 51°. The average high for September is 65° with an average low of 47°. 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 Laporte. See also: October | November | December.