S
M
T
W
T
F
S
30
84°
55°
31
74°
56°
1
74°
63°
2
80°
62°
3
78°
55°
4
77°
60°
5
81°
53°
6
72°
54°
7
73°
55°
8
72°
50°
9
71°
54°
10
75°
54°
11
73°
50°
12
70°
49°
13
71°
50°
14
73°
54°
15
74°
50°
16
70°
48°
17
68°
48°
18
67°
46°
19
67°
47°
20
68°
49°
21
68°
52°
22
69°
47°
23
71°
55°
24
73°
50°
25
73°
56°
26
74°
54°
27
74°
45°
28
67°
45°
29
64°
53°
30
69°
53°
1
66°
52°
2
69°
51°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lockport
Lockport's September 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 44° and 63°. The average high for September is 72° with an average low of 52°. 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 Lockport. See also: October | November | December.
