S
M
T
W
T
F
S
27
83°
59°
28
83°
58°
29
82°
60°
30
81°
58°
1
81°
56°
2
79°
57°
3
81°
57°
4
81°
58°
5
77°
58°
6
78°
57°
7
77°
58°
8
78°
57°
9
79°
57°
10
78°
55°
11
78°
48°
12
65°
45°
13
64°
44°
14
63°
42°
15
63°
40°
16
64°
45°
17
64°
43°
18
62°
39°
19
61°
40°
20
61°
41°
21
62°
47°
22
62°
49°
23
76°
48°
24
75°
43°
25
65°
41°
26
63°
39°
27
59°
34°
28
57°
39°
29
59°
47°
30
61°
39°
31
67°
34°
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 57° to 83°, with overnight lows between 34° and 60°. The average high for October is 71° with an average low of 48°. 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.
