S
M
T
W
T
F
S
27
82°
59°
28
84°
62°
29
80°
62°
30
85°
61°
1
82°
61°
2
82°
60°
3
83°
61°
4
83°
60°
5
78°
59°
6
79°
59°
7
84°
58°
8
85°
59°
9
84°
58°
10
84°
59°
11
83°
58°
12
83°
58°
13
82°
57°
14
83°
58°
15
83°
56°
16
81°
56°
17
81°
50°
18
80°
48°
19
75°
49°
20
77°
48°
21
75°
48°
22
77°
54°
23
80°
53°
24
81°
47°
25
73°
46°
26
72°
52°
27
74°
53°
28
73°
53°
29
78°
46°
30
75°
51°
31
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mount Vernon
Mount Vernon's October 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 46° and 62°. The average high for October is 80° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Mount Vernon. See also: November | December | January.
