S
M
T
W
T
F
S
29
63°
36°
30
80°
44°
31
70°
38°
1
39°
35°
2
70°
37°
3
62°
39°
4
53°
40°
5
53°
37°
6
51°
32°
7
37°
28°
8
71°
35°
9
70°
46°
10
56°
36°
11
60°
51°
12
74°
60°
13
78°
64°
14
78°
60°
15
73°
55°
16
72°
51°
17
63°
43°
18
51°
41°
19
64°
50°
20
69°
50°
21
63°
47°
22
60°
41°
23
55°
46°
24
59°
47°
25
66°
45°
26
56°
40°
27
55°
39°
28
57°
48°
29
66°
50°
30
66°
50°
1
68°
46°
2
58°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Arlington Heights
Arlington Heights's April 2026 forecast shows daily high temperatures ranging from 51° to 78°, with overnight lows between 36° and 64°. The average high for April is 64° with an average low of 48°. 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 Arlington Heights. See also: May | June | July.
