S
M
T
W
T
F
S
29
74°
46°
30
79°
54°
31
82°
59°
1
86°
60°
2
85°
59°
3
86°
60°
4
87°
62°
5
83°
64°
6
71°
54°
7
75°
52°
8
74°
52°
9
77°
48°
10
82°
50°
11
87°
50°
12
87°
52°
13
84°
55°
14
88°
58°
15
90°
60°
16
89°
59°
17
91°
62°
18
92°
64°
19
75°
54°
20
78°
45°
21
83°
53°
22
82°
55°
23
87°
55°
24
85°
57°
25
88°
61°
26
87°
62°
27
82°
57°
28
83°
66°
29
84°
63°
30
82°
52°
1
77°
52°
2
72°
50°
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 72° to 88°, with overnight lows between 50° and 66°. The average high for April is 82° with an average low of 58°. 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.