S
M
T
W
T
F
S
29
31°
9°
30
44°
25°
31
31°
23°
1
29°
19°
2
34°
13°
3
32°
26°
4
32°
25°
5
35°
24°
6
36°
20°
7
32°
5°
8
40°
17°
9
50°
32°
10
51°
30°
11
42°
23°
12
48°
32°
13
52°
44°
14
58°
29°
15
40°
24°
16
43°
25°
17
47°
29°
18
49°
29°
19
49°
28°
20
50°
30°
21
53°
30°
22
48°
29°
23
52°
36°
24
45°
35°
25
51°
30°
26
45°
28°
27
46°
31°
28
46°
31°
29
48°
32°
30
48°
30°
1
49°
30°
2
49°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lille
Lille's April 2026 forecast shows daily high temperatures ranging from 32° to 58°, with overnight lows between 5° and 44°. The average high for April is 47° with an average low of 29°. 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 Lille. See also: May | June | July.