S
M
T
W
T
F
S
29
68°
34°
30
74°
52°
31
81°
61°
1
84°
59°
2
83°
59°
3
81°
63°
4
79°
63°
5
71°
49°
6
71°
45°
7
70°
43°
8
64°
43°
9
72°
49°
10
77°
52°
11
79°
56°
12
82°
55°
13
82°
59°
14
76°
56°
15
76°
56°
16
75°
51°
17
78°
55°
18
71°
54°
19
76°
54°
20
77°
53°
21
77°
55°
22
78°
55°
23
79°
56°
24
80°
57°
25
80°
58°
26
79°
58°
27
80°
54°
28
73°
52°
29
79°
58°
30
80°
57°
1
74°
54°
2
75°
55°
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 64° to 82°, with overnight lows between 43° and 63°. The average high for April is 76° with an average low of 54°. 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.