S
M
T
W
T
F
S
29
52°
41°
30
50°
41°
31
54°
48°
1
54°
32°
2
48°
30°
3
50°
39°
4
50°
39°
5
46°
34°
6
54°
32°
7
68°
43°
8
54°
48°
9
52°
41°
10
50°
41°
11
51°
43°
12
51°
37°
13
50°
38°
14
56°
50°
15
56°
47°
16
57°
49°
17
56°
46°
18
54°
44°
19
55°
42°
20
54°
44°
21
57°
43°
22
55°
42°
23
56°
43°
24
50°
37°
25
55°
40°
26
54°
38°
27
56°
39°
28
55°
38°
29
53°
42°
30
53°
42°
1
52°
42°
2
53°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Kilmarnock
Kilmarnock's April 2026 forecast shows daily high temperatures ranging from 50° to 57°, with overnight lows between 37° and 50°. The average high for April is 54° 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 Kilmarnock. See also: May | June | July.