S
M
T
W
T
F
S
29
50°
34°
30
54°
41°
31
64°
46°
1
55°
45°
2
55°
41°
3
61°
46°
4
59°
45°
5
57°
37°
6
63°
32°
7
68°
39°
8
79°
43°
9
68°
45°
10
N/A
11
57°
44°
12
59°
39°
13
58°
38°
14
60°
47°
15
62°
48°
16
64°
48°
17
64°
48°
18
65°
46°
19
64°
46°
20
61°
45°
21
62°
45°
22
60°
44°
23
54°
41°
24
53°
38°
25
53°
37°
26
54°
37°
27
54°
38°
28
58°
43°
29
60°
45°
30
60°
45°
1
61°
44°
2
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Radlett
Radlett's April 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 37° and 48°. The average high for April is 59° with an average low of 43°. 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 Radlett. See also: May | June | July.