S
M
T
W
T
F
S
29
53°
33°
30
72°
43°
31
75°
41°
1
41°
33°
2
59°
36°
3
75°
39°
4
67°
40°
5
45°
33°
6
52°
27°
7
36°
23°
8
54°
22°
9
67°
45°
10
51°
37°
11
52°
36°
12
79°
39°
13
82°
59°
14
81°
60°
15
70°
59°
16
70°
50°
17
69°
50°
18
66°
44°
19
51°
32°
20
45°
29°
21
72°
37°
22
72°
48°
23
77°
45°
24
74°
48°
25
54°
47°
26
59°
42°
27
65°
40°
28
67°
48°
29
55°
39°
30
52°
37°
1
49°
35°
2
50°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in LaSalle
LaSalle's April 2026 forecast shows daily high temperatures ranging from 49° to 67°, with overnight lows between 35° and 48°. The average high for April is 55° with an average low of 39°. 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 LaSalle. See also: May | June | July.