S
M
T
W
T
F
S
29
48°
36°
30
52°
41°
31
61°
45°
1
54°
46°
2
52°
39°
3
57°
45°
4
55°
43°
5
54°
39°
6
57°
36°
7
63°
39°
8
73°
45°
9
64°
41°
10
54°
41°
11
54°
43°
12
55°
37°
13
54°
36°
14
59°
36°
15
59°
48°
16
63°
48°
17
61°
48°
18
N/A
19
58°
39°
20
54°
40°
21
57°
42°
22
61°
42°
23
62°
41°
24
61°
41°
25
59°
41°
26
57°
40°
27
56°
41°
28
58°
43°
29
61°
43°
30
60°
46°
1
61°
45°
2
55°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Welwyn Garden City
Welwyn Garden City's April 2026 forecast shows daily high temperatures ranging from 54° to 62°, with overnight lows between 38° and 46°. The average high for April is 59° with an average low of 42°. 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 Welwyn Garden City. See also: May | June | July.