S
M
T
W
T
F
S
29
37°
14°
30
45°
28°
31
42°
27°
1
33°
27°
2
32°
29°
3
33°
28°
4
34°
29°
5
46°
39°
6
47°
28°
7
38°
23°
8
35°
21°
9
48°
32°
10
45°
35°
11
42°
32°
12
40°
33°
13
46°
32°
14
41°
30°
15
42°
31°
16
46°
33°
17
44°
34°
18
46°
32°
19
44°
32°
20
45°
35°
21
48°
34°
22
45°
32°
23
46°
33°
24
45°
36°
25
49°
36°
26
46°
35°
27
46°
35°
28
47°
34°
29
47°
34°
30
48°
31°
1
47°
32°
2
48°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mount Vernon
Mount Vernon's April 2026 forecast shows daily high temperatures ranging from 35° to 49°, with overnight lows between 21° and 39°. The average high for April is 45° with an average low of 33°. 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 Mount Vernon. See also: May | June | July.
