S
M
T
W
T
F
S
29
43°
20°
30
57°
32°
31
39°
32°
1
39°
28°
2
42°
28°
3
55°
35°
4
44°
34°
5
50°
34°
6
40°
27°
7
32°
22°
8
42°
19°
9
59°
31°
10
51°
36°
11
48°
28°
12
48°
25°
13
60°
40°
14
50°
41°
15
47°
43°
16
54°
45°
17
68°
41°
18
72°
47°
19
51°
24°
20
39°
24°
21
48°
36°
22
54°
34°
23
55°
35°
24
53°
37°
25
59°
39°
26
58°
39°
27
56°
36°
28
60°
37°
29
63°
41°
30
53°
40°
1
53°
38°
2
52°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Joliette
Joliette's April 2026 forecast shows daily high temperatures ranging from 39° to 72°, with overnight lows between 24° and 47°. The average high for April is 55° with an average low of 37°. 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 Joliette. See also: May | June | July.