S
M
T
W
T
F
S
29
68°
32°
30
72°
55°
31
80°
62°
1
79°
60°
2
82°
60°
3
82°
64°
4
82°
59°
5
59°
41°
6
64°
34°
7
55°
35°
8
72°
34°
9
77°
50°
10
77°
48°
11
71°
54°
12
83°
50°
13
73°
62°
14
81°
62°
15
84°
64°
16
N/A
17
84°
65°
18
79°
43°
19
61°
38°
20
61°
38°
21
74°
51°
22
75°
52°
23
76°
55°
24
78°
56°
25
73°
50°
26
66°
47°
27
61°
45°
28
62°
47°
29
65°
50°
30
66°
51°
1
66°
50°
2
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Mount Vernon
Mount Vernon's April 2026 forecast shows daily high temperatures ranging from 61° to 84°, with overnight lows between 38° and 65°. The average high for April is 70° with an average low of 49°. 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.