S
M
T
W
T
F
S
1
78°
43°
2
79°
46°
3
66°
52°
4
81°
50°
5
83°
56°
6
86°
65°
7
86°
67°
8
81°
64°
9
84°
62°
10
88°
62°
11
89°
61°
12
72°
52°
13
73°
41°
14
82°
48°
15
84°
59°
16
73°
39°
17
53°
34°
18
59°
33°
19
69°
37°
20
76°
39°
21
84°
50°
22
86°
56°
23
86°
60°
24
73°
55°
25
71°
53°
26
82°
55°
27
87°
60°
28
71°
52°
29
74°
46°
30
79°
54°
31
82°
59°
1
86°
60°
2
85°
59°
3
86°
60°
4
87°
62°
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 ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. 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.
