S
M
T
W
T
F
S
1
53°
30°
2
60°
29°
3
55°
44°
4
52°
46°
5
51°
44°
6
49°
44°
7
53°
46°
8
52°
40°
9
45°
36°
10
45°
33°
11
52°
38°
12
45°
35°
13
41°
33°
14
47°
34°
15
48°
34°
16
55°
41°
17
56°
48°
18
56°
51°
19
55°
51°
20
54°
44°
21
52°
39°
22
51°
35°
23
50°
29°
24
57°
41°
25
51°
39°
26
53°
35°
27
55°
34°
28
54°
38°
29
46°
34°
30
50°
31°
31
58°
34°
1
50°
43°
2
52°
42°
3
58°
43°
4
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Mount Vernon
Mount Vernon's March 2026 forecast shows daily high temperatures ranging from 62° to 62°, with overnight lows between 41° and 41°. The average high for March is 62° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Mount Vernon. See also: April | May | June.
