S
M
T
W
T
F
S
27
79°
46°
28
83°
42°
29
86°
44°
30
94°
56°
1
93°
70°
2
72°
57°
3
78°
49°
4
82°
45°
5
78°
43°
6
80°
39°
7
90°
42°
8
87°
45°
9
91°
43°
10
77°
49°
11
86°
53°
12
93°
53°
13
93°
59°
14
78°
66°
15
82°
66°
16
61°
50°
17
60°
36°
18
67°
32°
19
72°
34°
20
75°
42°
21
75°
38°
22
78°
40°
23
75°
45°
24
77°
40°
25
78°
48°
26
77°
44°
27
75°
45°
28
79°
46°
29
81°
47°
30
81°
55°
31
76°
59°
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 75° to 81°, with overnight lows between 44° and 59°. The average high for October is 78° 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 October weather will actually feel in Mount Vernon. See also: November | December | January.
