S
M
T
W
T
F
S
29
42°
20°
30
30°
21°
31
30°
20°
1
37°
15°
2
39°
29°
3
44°
29°
4
45°
31°
5
42°
20°
6
29°
16°
7
35°
30°
8
39°
20°
9
37°
26°
10
43°
28°
11
52°
41°
12
54°
31°
13
38°
19°
14
39°
23°
15
47°
30°
16
51°
33°
17
45°
31°
18
51°
34°
19
52°
36°
20
54°
30°
21
52°
30°
22
56°
31°
23
45°
26°
24
46°
24°
25
47°
36°
26
57°
30°
27
60°
31°
28
62°
39°
29
64°
41°
30
64°
40°
1
63°
41°
2
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lockport
Lockport's April 2026 forecast shows daily high temperatures ranging from 35° to 66°, with overnight lows between 19° and 41°. The average high for April is 51° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Lockport. See also: May | June | July.